4. Endless belt power transmission systems or components
  5. Positive drive pulley or guide roll
  6. With particular belt

James A. Bruns

Inventor

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Door operator apparatus

Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent

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Mechanical power transmission system

Endless belt power transmission systems or components – Positive drive pulley or guide roll – With particular belt
Patent

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Mechanical power transmission system

Endless belt power transmission systems or components – Positive drive pulley or guide roll – With particular belt
Patent

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Safety catch assembly for doors; door assembly; and, use

Movable or removable closures – With safety brake or catch
Reexamination Certificate

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Profile ID: LFUS-PAI-P-820991

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