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Self-reversing tapping system
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Patent number 8,162,573
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Issue date Apr 24, 2012
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The Tapmatic Corporation
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Tap and quick change tap holder assembly
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Patent number 5,271,697
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Issue date Dec 21, 1993
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Tapmatic International Corporation (TIC AG)
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Drive in tapping attachments
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Patent number 5,209,616
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Issue date May 11, 1993
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Tapmatic Corporation
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Tapping attachments
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Patent number 5,203,651
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Issue date Apr 20, 1993
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Tapmatic Corporation
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Dog drive for tapping attachments
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Patent number 5,131,794
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Issue date Jul 21, 1992
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Tapmatic Corporation
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Positive drive adapter
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Patent number 5,011,344
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Issue date Apr 30, 1991
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Tapmatic Corporation
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Universal floating tool holder
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Patent number 3,945,751
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Issue date Mar 23, 1976
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Allan S. Johnson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR