4. Movable or removable closures
  5. With operator for movably mounted closure
  6. Operator drives closure along guide

Erich P. Stephen

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Double trolley overhead door operator

Movable or removable closures – Closures interconnected for concurrent movement – Opposed similar movement
Reexamination Certificate

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Encased overhead door operator having threadably attached...

Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2142030

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