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Charles E. Williams
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Delavan, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Seal setting mechanism
Patent number
6,167,937
Issue date
Jan 2, 2001
Hufcor, Inc.
Charles E. Williams
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information
Patent Grant
Wall panel having movable cap
Patent number
6,079,174
Issue date
Jun 27, 2000
Hufcor, Inc.
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Fire-rated panel
Patent number
5,481,834
Issue date
Jan 9, 1996
Hufcor, Inc.
Stanley Kowalczyk
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information
Patent Grant
Multi-directional carrier system for operable partitions
Patent number
5,406,676
Issue date
Apr 18, 1995
Hufcor, Inc.
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Operable wall deployment and storage system
Patent number
5,230,123
Issue date
Jul 27, 1993
Hufcor, Inc.
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Reinforced carrier disc for operable partition system
Patent number
5,181,296
Issue date
Jan 26, 1993
Hufcor, Inc.
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Dual wall partition
Patent number
4,763,714
Issue date
Aug 16, 1988
Hough Manufacturing Corporation
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Acoustic type folding door with separate cover sections
Patent number
4,658,878
Issue date
Apr 21, 1987
Hough Manufacturing Corporation
Charles E. Williams
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information
Patent Grant
Lost motion suspension system for operable partitions
Patent number
4,073,092
Issue date
Feb 14, 1978
Hough Manufacturing Corporation
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Drop action panel arrangement for operable partitions
Patent number
4,014,137
Issue date
Mar 29, 1977
Hough Manufacturing Corporation
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
Information
Patent Application
360 Degree hinge and door closure apparatus
Publication number
20040034968
Publication date
Feb 26, 2004
Hufcor, Inc.
Charles E. Williams
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES