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Safety device for opening of revolving doors

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Safety door unit and rotation guide and support device for door

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Safety enhanced pivoting door operator

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Safety flush bolt entrance door system

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Safety release security grille

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Security window system

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Sliding door system

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Swinging door system

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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Swinging door system

Movable or removable closures – With specified means to effect emergency release to closure
Patent

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