Title:
Upwardly acting doors
Document Type and Number:
United States Patent 3334681

Inventors:
Crosswell, Flay D.
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Sponsored by:
Flash of Genius
Publication Date:
08/08/1967
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Referenced by:
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Assignee:
OVERHEAD DOOR CORP
Primary Class:
160/40
Other Classes:
160/201, 16/DIG.001, 16/86A
International Classes:
E05D15/16; E05D15/24
US Patent References:
0208318
1152552
1630680Grain-car door
1820195Garage door
1994142Door operating mechanism
2126418Sectional door
2871932Upwardly acting doors having tracks inclined relative to the door frame
2978021Upwardly acting door and sections therefor
3034575Vertically acting door
3090427Upwardly acting door assembly
3177530Prefabricated enclosure
Foreign References:
GB332093A




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