Inventor · disambiguated record
Walter S. Christopher
Also filed as: CHRISTOPHER WALTER S
3 granted patents·55 citations·filing 1975–1982
71Inventor score
Files withCHICAGO LOCK CO3
Top patents by PatentIndex Score
3 records- 0178US4075879AMultiple function plate tumbler-type cylinder lock mechanismCHICAGO LOCK CO·Filed 1977·Granted Feb 28, 1978·34 cites·12 claims
- 0257US4019353AKeeper lock for a slide fastenerCHICAGO LOCK CO·Filed 1975·Granted Apr 26, 1977·16 cites·4 claims
- 0328US4617813ALock-picking tool and method of use thereofCHICAGO LOCK CO·Filed 1982·Granted Oct 21, 1986·5 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →