E - Fixed Constructions – 06 – B
Patent
E - Fixed Constructions
06
B
160/9
E06B 9/56 (2006.01)
Patent
CA 1284094
ABSTRACT A roll door assembly has a flexible roll door rollingly supported in a frame; a counterweight assembly employing fixed and movable pulleys and a counterweight retains the roll door taut.
529578
Atlantic Elevating Devices Ltd.
Ogilvy Renault
LandOfFree
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