Assignee
CHICAGO LOCK CO
US·34 granted patents·727 citations·filing 1975–1998
Top patents by PatentIndex Score
34 records- 0194US4446709ACylinder lock mechanismCHICAGO LOCK CO·Filed 1981·Granted May 8, 1984·73 cites·36 claims
- 0288US4069696AAxial split-pin tumbler-type lock and key thereforCHICAGO LOCK CO·Filed 1976·Granted Jan 24, 1978·48 cites·14 claims
- 0381US4132092AProtective cover for a handle lockCHICAGO LOCK CO·Filed 1978·Granted Jan 2, 1979·31 cites·16 claims
- 0480US4712400ARemovable cylinder lockCHICAGO LOCK CO·Filed 1987·Granted Dec 15, 1987·43 cites·6 claims
- 0578US4760721AHandle flange assemblyCHICAGO LOCK CO·Filed 1987·Granted Aug 2, 1988·34 cites·2 claims
- 0678US4078405AAlarm switch mechanism for an axial split-pin tumbler-type lockCHICAGO LOCK CO·Filed 1976·Granted Mar 14, 1978·32 cites·5 claims
- 0778US4075879AMultiple function plate tumbler-type cylinder lock mechanismCHICAGO LOCK CO·Filed 1977·Granted Feb 28, 1978·34 cites·12 claims
- 0876US5160180AAutomatic quick open/close locking mechanismCHICAGO LOCK CO·Filed 1991·Granted Nov 3, 1992·45 cites·19 claims
- 0976USD253160SKey blank for an axial tumbler-type lockCHICAGO LOCK CO·Filed 1978·Granted Oct 16, 1979·12 cites·1 claims
- 1076USD244081SKey blank for an axial tumbler-type lockCHICAGO LOCK CO·Filed 1976·Granted Apr 19, 1977·12 cites·1 claims
- 1172US5106251AAutomatic locking device for pop out handle locksCHICAGO LOCK CO·Filed 1990·Granted Apr 21, 1992·42 cites·2 claims
- 1271US4083211AAxial split-pin tumbler-type lock mechanism for a handle lockCHICAGO LOCK CO·Filed 1977·Granted Apr 11, 1978·22 cites·5 claims
- 1370US4191036AAxial split-pin tumbler-type lock mechanism and key thereforCHICAGO LOCK CO·Filed 1978·Granted Mar 4, 1980·21 cites·1 claims
- 1467US5916283AKey ring lock assemblyCHICAGO LOCK CO·Filed 1998·Granted Jun 29, 1999·29 cites·11 claims
- 1567US4735069ACylinder lock and keyCHICAGO LOCK CO·Filed 1984·Granted Apr 5, 1988·24 cites·7 claims
- 1667US4671711AKey-cutting machineCHICAGO LOCK CO·Filed 1983·Granted Jun 9, 1987·24 cites·17 claims
- 1766US4147905ASleeve and terminal holder assembly for an axial split-pin tumbler-type switch lock mechanismCHICAGO LOCK CO·Filed 1977·Granted Apr 3, 1979·12 cites·15 claims
- 1862US4111020APick-resistant axial split-pin tumbler-type lock mechanismCHICAGO LOCK CO·Filed 1977·Granted Sep 5, 1978·16 cites·18 claims
- 1959US4249402AKeeper lock for a slide fastenerCHICAGO LOCK CO·Filed 1979·Granted Feb 10, 1981·14 cites·11 claims
- 2057US4019353AKeeper lock for a slide fastenerCHICAGO LOCK CO·Filed 1975·Granted Apr 26, 1977·16 cites·4 claims
- 2156US4899565ASquare shaped axial split pin tumbler lockCHICAGO LOCK CO·Filed 1989·Granted Feb 13, 1990·15 cites·6 claims
- 2252US4835998ARemovable handle for T-handle lock assemblyCHICAGO LOCK CO·Filed 1988·Granted Jun 6, 1989·16 cites·4 claims
- 2350US4326396APlate tumbler for a cylinder lock mechanismCHICAGO LOCK CO·Filed 1980·Granted Apr 27, 1982·11 cites·9 claims
- 2449US4821539AKeeper lock for slide fastenerCHICAGO LOCK CO·Filed 1988·Granted Apr 18, 1989·15 cites·9 claims
- 2549US3971242AKey ejector lockCHICAGO LOCK CO·Filed 1975·Granted Jul 27, 1976·13 cites·13 claims
- 2647US3995463AKey ejector lockCHICAGO LOCK CO·Filed 1975·Granted Dec 7, 1976·10 cites·10 claims
- 2744US4227387AAxial split-pin tumbler-type lock mechanismCHICAGO LOCK CO·Filed 1978·Granted Oct 14, 1980·9 cites·11 claims
- 2844US4022039AKey ejector lockCHICAGO LOCK CO·Filed 1976·Granted May 10, 1977·11 cites·11 claims
- 2943US4228668AAxial split-pin tumbler-type lock mechanismCHICAGO LOCK CO·Filed 1979·Granted Oct 21, 1980·9 cites·3 claims
- 3042USD330501SKey headCHICAGO LOCK CO·Filed 1991·Granted Oct 27, 1992·4 cites·1 claims
- 3138US3956912AFiling cabinet lock having plate tumbler-type plug assemblyCHICAGO LOCK CO·Filed 1975·Granted May 18, 1976·11 cites·7 claims
- 3237US4395893APlate tumbler-type cylinder lock mechanismCHICAGO LOCK CO·Filed 1981·Granted Aug 2, 1983·6 cites·12 claims
- 3337US4099396APick-resistant axial split-pin tumbler-type lock mechanismCHICAGO LOCK CO·Filed 1977·Granted Jul 11, 1978·8 cites·16 claims
- 3428US4617813ALock-picking tool and method of use thereofCHICAGO LOCK CO·Filed 1982·Granted Oct 21, 1986·5 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when CHICAGO LOCK CO files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →