4. Movable or removable closures
  5. Up-and-over type; e.g., moves from vertical to withdrawn...
  6. With operator

LeRoy G. Krupke

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Articulated load bearing wear pad assembly

Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent

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Counterbalance mechanism for vertical opening door

Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Patent

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Counterbalance system for upward acting door

Movable or removable closures – Up-and-over type; e.g. – moves from vertical to withdrawn... – With operator
Patent

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Counterbalance system for upward acting door

Movable or removable closures – Up-and-over type; e.g. – moves from vertical to withdrawn... – With operator
Reissue Patent

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Guide track assemblies and mounting brackets for upward...

Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-344482

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