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EP0894932A2
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Arrangement for door closers and/or door openers
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AU2797097A
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A method for the determination of the distance and the angular position of an object
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CA2123741A1
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Door operating system with programmed control unit
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Revolving door
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Device for detecting objects, particularly such in motion
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Apparatus for controlling the opening and closing of doors
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PROTECTION DEVICE AT THE ENTRY OF A BUILDING AGAINST AIR CURRENT AND COLD
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Apparatus for photoelectric detection of objects
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Device for use in swing doors and the like
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Actuating system for power driven doors - has low voltage direct current motor and relays and permanent magnets
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Driving unit for hinged doors
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Hydraulic door openers
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Hydraulic door opener
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