4. Closure fasteners
  5. Bolts
  6. Swinging

Russell Wardlaw

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Release mechanism and method

Closure fasteners – Bolts – Swinging
Patent

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Release mechanism and method with alarm circuit

Closure fasteners – Bolts – Swinging
Patent

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Rolling door operating mechanism

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

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Time delay fire closure releasing device

Flexible or portable closure – partition – or panel – Automatic control – With releasing means for operator and/or counterbalance
Patent

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Profile ID: LFUS-PAI-P-234782

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