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Tug-resistant link
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Patent number 5,712,011
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Issue date Jan 27, 1998
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Beth Israel Deaconess Medical Center, Inc.
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Thomas A. McMahon
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bone fracture prevention method
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Patent number 5,545,128
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Issue date Aug 13, 1996
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Beth Israel Hospital
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Wilson C. Hayes
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Athletic playing surface
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Patent number 4,307,879
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Issue date Dec 29, 1981
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Thomas A. McMahon
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES