4. Machine element or mechanism
  5. Automatic operation or control

McKeon Rolling Steel Door Co., Inc.

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Fail-safe fire door release mechanism having automatic reset

Machine element or mechanism – Automatic operation or control
Patent

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Fire door system

Flexible or portable closure – partition – or panel – Automatic control
Patent

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Rolling door assembly having pass door arrangement

Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Plural strip – slat – or panel assemblies
Reexamination Certificate

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Rolling door assembly having pass door arrangement

Flexible or portable closure – partition – or panel – Automatic control – With starting or driving means
Patent

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Self-closing single-sided accordion fire door

Flexible or portable closure – partition – or panel – Automatic control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1193214

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