Inventor · disambiguated record
Donald R. Davidson
Also filed as: DAVIDSON DONALD R · DAVIDSON DONALD ROBERT
26 granted patents·2 pending applications·606 citations·filing 1977–2007
97Inventor score
Top patents by PatentIndex Score
28 records- 0192US4386573AEmbroidery attachment for electronic sewing machineSINGER CO·Filed 1982·Granted Jun 7, 1983·21 cites·15 claims
- 0290US7318448B2Swimming pool cleaning apparatus and parts thereforH TECH INC·Filed 2002·Granted Jan 15, 2008·47 cites·30 claims
- 0387US5993753AChlorinator/sanitizer and method of using sameH TECH INC·Filed 1998·Granted Nov 30, 1999·66 cites·22 claims
- 0484US5591329AFluid filter with pleated septumH TECH INC·Filed 1995·Granted Jan 7, 1997·56 cites·31 claims
- 0581US4434729AContinuous monogrammerSINGER CO·Filed 1980·Granted Mar 6, 1984·12 cites·5 claims
- 0679US6004458AFilter/sanitizerH TECH INC·Filed 1998·Granted Dec 21, 1999·42 cites·9 claims
- 0779US5871641AFluid filter with pleated septumH TECH INC·Filed 1996·Granted Feb 16, 1999·51 cites·35 claims
- 0878US5607224APlastic niche and grounding assembly thereforH TECH INC·Filed 1995·Granted Mar 4, 1997·39 cites·23 claims
- 0977US6254788B1Method of sanitizing water in a bathing poolH TECH INC·Filed 1999·Granted Jul 3, 2001·37 cites·3 claims
- 1072US5432688APlastic niche and grounding assembly thereforH TECH INC·Filed 1993·Granted Jul 11, 1995·40 cites·20 claims
- 1169US4296698AButton attaching hand tool with button storage compartmentSINGER CO·Filed 1980·Granted Oct 27, 1981·30 cites·10 claims
- 1266US4380961AVariably controllable bobbin thread pull-off mechanismSINGER CO·Filed 1981·Granted Apr 26, 1983·7 cites·9 claims
- 1363US5882528AMethod for extending useful life of filter aid in a filter with hydraulically deformable systemH TECH INC·Filed 1996·Granted Mar 16, 1999·24 cites·13 claims
- 1463US5271561ARotary jet hydrotherapy device and methodHAYWARD IND INC·Filed 1992·Granted Dec 21, 1993·39 cites·32 claims
- 1562US4316562AButton attaching toolSINGER CO·Filed 1980·Granted Feb 23, 1982·23 cites·11 claims
- 1662US2008202997A1Debris bag for a swimming pool cleaning apparatusDAVIDSON DONALD R·Filed 2007·Application pending·0 cites
- 1759USD312905SSteam iron sole plate for high nap fabrics or similar articleSSMC INC·Filed 1988·Granted Dec 11, 1990·9 cites·1 claims
- 1857US4372237ATwo dimensional feed for monogram sewing machineSINGER CO·Filed 1981·Granted Feb 8, 1983·5 cites·5 claims
- 1956US5788258AFolding ball hitch with recessed safety chain attachmentATWOOD IND INC·Filed 1996·Granted Aug 4, 1998·21 cites·17 claims
- 2052US4167912ASewing machine stitch length override and feed balance for digital feed actuatorsSINGER CO·Filed 1977·Granted Sep 18, 1979·6 cites·10 claims
- 2148US2005279682A1Debris bag for a swimming pool cleaning apparatusDAVIDSON DONALD R·Filed 2005·Application pending·0 cites
- 2243US4176561ALow tolerance rotary to linear transmissionSINGER CO·Filed 1977·Granted Dec 4, 1979·6 cites·3 claims
- 2342US4955152ASteam ironing pressSSMC INC·Filed 1989·Granted Sep 11, 1990·10 cites·5 claims
- 2437US4953300ASteam ironing pressSSMC INC·Filed 1989·Granted Sep 4, 1990·7 cites·6 claims
- 2536US4922637ASteam ironing press #1SSMC INC·Filed 1989·Granted May 8, 1990·6 cites·4 claims
- 2631USD312907SSteam iron sole plate for accommodating zippers or similar articleSSMC INC·Filed 1988·Granted Dec 11, 1990·1 cites·1 claims
- 2731USD312906SSteam iron sole plate for accommodating buttons and pleats or similar articleSSMC INC·Filed 1988·Granted Dec 11, 1990·1 cites·1 claims
- 2828USD313097SSteam iron sole plate for seam opening or similar articleSSMC INC·Filed 1988·Granted Dec 18, 1990·0 cites·1 claims
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