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Tools & Hardware
Class Information
Number:
16/57
Name:
Miscellaneous hardware
>
Checks and closers
>
Liquid
> Oscillating cylinder
Description:
Devices including oscillating cylinders.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
6678918
Open-close apparatus
Jan. 20, 2004
6493904
Door closer
Dec. 17, 2002
6434788
Door closer
Aug. 20, 2002
6317922
Door closer
Nov. 20, 2001
5170530
Door closer
Dec. 15, 1992
5012551
Furniture hinge
May. 7, 1991
4935985
Return apparatus
Jun. 26, 1990
4662111
Mechanism for controlled closing of hinged gates
May. 5, 1987
4411341
Rotary hydraulic damper
Oct. 25, 1983
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