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John W. Sherman
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Corvallis, OR, US
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Patents Grants
last 30 patents
Information
Patent Grant
Secure entry system with radio communications
Patent number
6,072,402
Issue date
Jun 6, 2000
SLC Technologies, Inc.
John M. Kniffin
G07 - CHECKING-DEVICES
Information
Patent Grant
Access control device featuring key ordering or key simultaneity
Patent number
5,705,991
Issue date
Jan 6, 1998
Supra Products, Inc.
John M. Kniffin
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Electronic security system
Patent number
5,280,518
Issue date
Jan 18, 1994
Supra Products, Inc.
Richard W. Danler
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Electronic security system with configurable key
Patent number
4,947,163
Issue date
Aug 7, 1990
Supra Products, Inc.
Walter G. Henderson
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Electronic key with interactive graphic user interface
Patent number
4,914,732
Issue date
Apr 3, 1990
Supra Products, Inc.
Walter G. Henderson
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Electronic lock with energy conservation features
Patent number
4,896,246
Issue date
Jan 23, 1990
Supra Products, Inc.
Walter G. Henderson
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Electronic real estate lockbox system
Patent number
4,766,746
Issue date
Aug 30, 1988
Supra Products, Inc.
Walter G. Henderson
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES