4. Bridges
  5. Gangway, ramp, or dock leveler
  6. Attached

William B. Weishar

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Counterbalancing mechanism for the ramp of a dockboard

Bridges – Gangway – ramp – or dock leveler – Attached
Patent

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Drive mechanism for an industrial door

Flexible or portable closure – partition – or panel – Roll type – With rotating means
Patent

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Impactable door

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

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Manually operated industrial roll door

Flexible or portable closure – partition – or panel – Roll type – With fabric free edge connected operator
Patent

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Overhead door with a panel-carrier frame and replaceable panels

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

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Profile ID: LFUS-PAI-P-595406

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