Title:
FLEXIBLE DOOR WITH SPACED LEAF SPRINGS
United States Patent 3420290
US Patent References:
/1172800.html
- - 1172800

Yinldable barrier for automatic railway-crossing gates
- - 1628651

Door body
- - 2720920

Flexible door
- - 2783833

Door body construction
- - 2815808


Inventors:
Dirubbo, Angelo
Publication Date:
01/07/1969
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Assignee:
A & D FABRICATING CO INC
Primary Class:
160/354
International Classes:
E06B3/80; E06B3/70; E06B5/00
US Patent References:
3090425Multiple wall sight and sound insulating partition
3212561Yieldable door




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