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US4385471A
|
|
Overhead door stop
|
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GB1078710A
|
|
Door frame elements
|
|
US3177022A
|
|
Latching mechanism for overhead doors
|
|
US3221465A
|
|
Sectional overhead door
|
|
US3160200A
|
|
Drive mechanism for overhead doors
|
|
US2861800A
|
|
Door operating mechanism
|
|
US2861799A
|
|
Door operating mechanism
|
|
GB734538A
|
|
Improvements in or relating to door construction
|
|
US2664597A
|
|
Counterbalanced door construction
|
|
US2759226A
|
|
Door for airplane hangars and the like
|
|
US2678689A
|
|
Overhead door construction
|
|
US2655683A
|
|
Overhead door
|
|
US2639143A
|
|
Safety door arm
|
|
US2607410A
|
|
Counterbalancing means
|
|
US2656561A
|
|
Overhead door wheel mount
|
|
US2645807A
|
|
Hinge for multisection overhead doors
|
|
US2545879A
|
|
Traveler and brace for worms
|
|
US2625221A
|
|
Overdoor
|
|
US2550721A
|
|
Intermediate support for rotatable threaded members
|
|
US2572785A
|
|
Door operating mechanism
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