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Connector with reduced stresses
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Patent number 4,817,992
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Issue date Apr 4, 1989
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Novacorp International Consulting Ltd.
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David Yip
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E21 - EARTH DRILLING MINING
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High pressure, multiple passage swivel
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Patent number 4,669,758
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Issue date Jun 2, 1987
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Novacorp International Consulting Ltd.
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Murray D. Feller
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Pipe bend restrictor
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Patent number 4,647,255
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Issue date Mar 3, 1987
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Novacorp International Consulting Ltd.
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Eric G. Pow
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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