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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Tools & Hardware
Class Information
Number: 16/DIG.10
Name: Miscellaneous hardware > Spring actuated checks and closers
Description:










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
4180888 Door closer Jan. 1, 1980
4178655 Counterbalance mechanism Dec. 18, 1979
4075734 Door closer Feb. 28, 1978
4048695 Door check and closure device Sep. 20, 1977
4010572 Door closer having means to neutralize the door closing force exerted thereby Mar. 8, 1977

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