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CA794096A
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Apparatus for manufacturing self-tapping threaded fasteners
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CA780160A
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Lock screw
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CA478765A
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Methods of slotting screw fasteners and fasteners made thereby
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CA494098A
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Driving tool for socket head fasteners
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CA479772A
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Self-adjusting bits and holders
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CA737687A
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Self-tapping threaded fasteners having lobular work-entering ends and method and apparatus for manufacturing the same
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CA500775A
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Driver for recessed head fasteners
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CA491391A
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Method of making headed fastener
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CA745405A
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Screw head recess, method of making the same, and punch for use therein
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CA487655A
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Recessed head fastener
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CA491196A
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Display card for taped screws
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CA505213A
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Process of making driver bits and improved article made thereby
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CA482046A
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Self-locking fastener
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