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Braking device for objects on inclined roller conveyor - has roll rotated by object to move locking roll to wedge position
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Braking device for objects on inclined roller conveyor - has roll rotated by object to move locking roll to wedge position
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Braking device for retarding moving objects - comprising two frictionally engaging rollers and biasing pressure plate
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Connector mechanism
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Locking mechanism
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Locking device for connecting together scaffolding elements and the like
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Improvements in structures having disengageable members
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Detachable connection device
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Frames for storage and like racks and stands
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Adjustable shelving
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Locking mechanism
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