Inventor · disambiguated record
David U. Hillstrom
Also filed as: HILLSTROM DAVID U
61 granted patents·4 pending applications·1,652 citations·filing 1976–2011
99Inventor score
Files withMARKETING DISPLAYS INC52HILLSTROM DAVID U2MARKETING DISPLAYS INTERNAT2MARKETING DISPLAYS INTERNATION2SARKISIAN ROBERT2
Top patents by PatentIndex Score
65 records- 0197USD392686SSign stand with rolling baseMARKETING DISPLAYS INC·Filed 1996·Granted Mar 24, 1998·95 cites·1 claims
- 0296USD351863SFree standing sign standMARKETING DISPLAYS INC·Filed 1993·Granted Oct 25, 1994·71 cites·1 claims
- 0394US7584563B2Sign stand with rolling baseMARKETING DISPLAYS INC·Filed 2004·Granted Sep 8, 2009·46 cites·21 claims
- 0493US4145828APoster display deviceMARKETING DISPLAYS INC·Filed 1977·Granted Mar 27, 1979·69 cites·13 claims
- 0592US6125565AOutdoor menu display deviceMARKETING DISPLAYS INC·Filed 1999·Granted Oct 3, 2000·94 cites·11 claims
- 0691US8104205B2Sign stand with rolling baseHILLSTROM DAVID U·Filed 2011·Granted Jan 31, 2012·12 cites·15 claims
- 0789US7941951B2Sign stand with rolling baseMARKETING DISPLAYS INC·Filed 2009·Granted May 17, 2011·8 cites·23 claims
- 0889US6606809B2Fold-up sign panel assemblyMARKETING DISPLAYS INC·Filed 2001·Granted Aug 19, 2003·32 cites·31 claims
- 0988US6631576B2Outdoor menu display deviceMARKETING DISPLAYS INC·Filed 2001·Granted Oct 14, 2003·19 cites·18 claims
- 1088US6560906B1Portable sign stand having frangible postMARKETING DISPLAYS INC·Filed 2000·Granted May 13, 2003·29 cites·19 claims
- 1186USD360078SWall mounted sign frameMARKETING DISPLAYS INC·Filed 1993·Granted Jul 11, 1995·28 cites·1 claims
- 1286US5428913APole banner systemMARKETING DISPLAYS INC·Filed 1994·Granted Jul 4, 1995·56 cites·24 claims
- 1385US5815971APoster frame with moisture sealMARKETING DISPLAYS INC·Filed 1997·Granted Oct 6, 1998·67 cites·8 claims
- 1485US4691892ASign and sign standMARKETING DISPLAYS INC·Filed 1985·Granted Sep 8, 1987·58 cites·72 claims
- 1584US6237883B1Sign bracket for sign standMARKETING DISPLAYS INTERNAT·Filed 2000·Granted May 29, 2001·26 cites·15 claims
- 1682US7698843B2Flexible sign mountMARKETING DISPLAYS INC·Filed 2007·Granted Apr 20, 2010·12 cites·21 claims
- 1782US6298589B1Outdoor menu display deviceMARKETING DISPLAYS INC·Filed 2000·Granted Oct 9, 2001·33 cites·8 claims
- 1882US4756107ADisplay retention and tensioning frameMARKETING DISPLAYS INC·Filed 1987·Granted Jul 12, 1988·45 cites·14 claims
- 1981US4033536AMounting bracket coil springSARKISIAN ROBERT·Filed 1976·Granted Jul 5, 1977·39 cites·4 claims
- 2080US4958458APoster display device with longitudinal retention of frame sections by insertsMARKETING DISPLAYS INC·Filed 1989·Granted Sep 25, 1990·42 cites·33 claims
- 2179US5983543AOutdoor menu display deviceFiled 1997·Granted Nov 16, 1999·38 cites·11 claims
- 2279US4138787ADisplay holderSARKISIAN ROBERT·Filed 1976·Granted Feb 13, 1979·34 cites·28 claims
- 2378US6427964B1Flag holder bracket for sign standMARKETING DISPLAYS INTERNAT·Filed 2000·Granted Aug 6, 2002·17 cites·20 claims
- 2478US5442871APoster and sign display assemblyMARKETING DISPLAYS INC·Filed 1993·Granted Aug 22, 1995·45 cites·13 claims
- 2576US7996980B2Sign stand with rolling baseMARKETING DISPLAYS INC·Filed 2009·Granted Aug 16, 2011·5 cites·7 claims
- 2676US5829178APortable collapsible sign and standMARKETING DISPLAYS INC·Filed 1996·Granted Nov 3, 1998·41 cites·17 claims
- 2776US4433935ASign bracketMARKETING DISPLAYS INC·Filed 1981·Granted Feb 28, 1984·34 cites·3 claims
- 2875US6755381B1Portable sign stand with leg release mechanismMARKETING DISPLAYS INC·Filed 2002·Granted Jun 29, 2004·31 cites·23 claims
- 2974US5381324AIlluminated canopy systemMARKETING DISPLAYS INC·Filed 1992·Granted Jan 10, 1995·23 cites·71 claims
- 3072US5675923ARigid sign with protective changeable indicia memberMARKETING DISPLAYS INC·Filed 1995·Granted Oct 14, 1997·38 cites·7 claims
- 3172US5647155ASheet tensioning systemMARKETING DISPLAYS INC·Filed 1995·Granted Jul 15, 1997·35 cites·7 claims
- 3271US6843011B2Menu display deviceMARKETING DISPLAYS INC·Filed 2003·Granted Jan 18, 2005·16 cites·64 claims
- 3371US4040223APanel framing device and methodMARKETING DISPLAYS INC·Filed 1976·Granted Aug 9, 1977·32 cites·6 claims
- 3469US4592530AUniversal mounting bracket for gas pump toppersMARKETING DISPLAYS INC·Filed 1984·Granted Jun 3, 1986·26 cites·25 claims
- 3566US7174663B2Outdoor menu display deviceMARKETING DISPLAYS INC·Filed 2004·Granted Feb 13, 2007·3 cites·27 claims
- 3666US4862615AReleasable anchoring and tensioning apparatus for billboard displaysMARKETING DISPLAYS INC·Filed 1988·Granted Sep 5, 1989·23 cites·12 claims
- 3765US5040586ABanner holding deviceMARKETING DISPLAYS INC·Filed 1990·Granted Aug 20, 1991·28 cites·9 claims
- 3864US5142804AReleasable anchoring and tensioning apparatus for billboard displaysMARKETING DISPLAYS INC·Filed 1991·Granted Sep 1, 1992·24 cites·21 claims
- 3961US5725186AUniversal flexible sign mounting deviceMARKETING DISPLAYS INC·Filed 1997·Granted Mar 10, 1998·28 cites·8 claims
- 4061US4937959APoster display device with longitudinal retention of frame sectionsMARKETING DISPLAYS INC·Filed 1987·Granted Jul 3, 1990·25 cites·37 claims
- 4160US6056250ASign stand for flexible traffic control signageMARKETING DISPLAYS INTERNATION·Filed 1998·Granted May 2, 2000·27 cites·33 claims
- 4260US5682694AOutdoor menu display deviceMARKETING DISPLAYS INC·Filed 1996·Granted Nov 4, 1997·25 cites·11 claims
- 4360US4730803AGround access elevated pole bannerMARKETING DISPLAYS INC·Filed 1986·Granted Mar 15, 1988·22 cites·18 claims
- 4459US7458554B1Portable sign stand with sign release mechanismMARKETING DISPLAYS INC·Filed 2003·Granted Dec 2, 2008·12 cites·29 claims
- 4558US2008236005A1Menu board assemblyISAYEV IGOR·Filed 2007·Application pending·0 cites
- 4657US4823533AStructural cladding apparatusMARKETING DISPLAYS INC·Filed 1987·Granted Apr 25, 1989·20 cites·20 claims
- 4755US2009230266A1Universally Mountable Bollard BracketMARKETING DISPLAYS INC·Filed 2008·Application pending·0 cites
- 4852US5878474AMethod for installing flexible sign panels with movable trolleyMARKETING DISPLAYS INC·Filed 1996·Granted Mar 9, 1999·10 cites·7 claims
- 4952US5537302AIlluminated sign with patterned openings on light dispersion memberMARKETING DISPLAYS INC·Filed 1994·Granted Jul 16, 1996·8 cites·10 claims
- 5050US2009084919A1Sliding bollard bracket mountHILLSTROM DAVID U·Filed 2007·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →