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US2688509A
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Door latch mechanism
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Door latch remote control mechanism
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Door check and holding device
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Door check and holding device
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US2405719A
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Combined door-hinging, door-checking, and door-holding device
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US2394014A
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Combined door-hinging, door-checking, and door-holding device
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US2441600A
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Combined door-hinging, door-checking, and door-holding device
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US2371071A
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Tread block core for endless tracks and the like
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Rotary bolt for door latches
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US2343810A
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Combined door-hinging, door-checking, and door-holding device
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US2219825A
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Door hinge and door opening means
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Door opening device
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US2219821A
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Door opening device
|
|
US2219822A
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Door opening, door checking, and door holding device
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US2219823A
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Door opening means
|
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US2219824A
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Door opening and door checking device
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US2219820A
|
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Door opening means
|
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US2201208A
|
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Door opening device
|
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US2156874A
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Door holding and door control mechanism
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US2291412A
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Combined door-checking and doorholding device
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