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US2899021A
|
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Door operator
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US2581969A
|
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Elevator car switch
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US2458702A
|
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Elevator hatchway door operator
|
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US2523645A
|
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Door sensitive edge actuated switch
|
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US2435477A
|
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Door hanger
|
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US2445660A
|
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Electric treadle
|
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US2363929A
|
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Electric operator for opening and closing doors
|
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US2266408A
|
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Reel arbor
|
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US2238460A
|
|
Reel arbor
|
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US2266407A
|
|
Wire drawing machine
|
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US2232206A
|
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Capstan block
|
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US2252755A
|
|
Method of saturating fibrous coverings on wires, cables, and the like
|
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US2216225A
|
|
Apparatus for coiling wire or the like
|
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US2216224A
|
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Apparatus for coiling wire or the like
|
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US2178414A
|
|
Spooling or reeling apparatus
|
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US2134994A
|
|
Taping head for winding apparatus
|
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US2135131A
|
|
Sensitive door edge structure
|
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US2131784A
|
|
Track for overhead door hangers
|
|
US2155211A
|
|
Spooling or reeling mechanism
|
|
US2140728A
|
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Wire spooling apparatus and tension varying element
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