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L.C. Derek Chamberlain
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Colorado Springs, CO, US
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last 30 patents
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Patent Grant
Electronic touch key providing a tactile pressure signal for an ele...
Patent number
5,689,985
Issue date
Nov 25, 1997
Schlage Lock Company
L.C. Derek Chamberlain
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES