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Plug valve
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Patent number 4,927,116
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Issue date May 22, 1990
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The Pullman Company
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Albert J. Schwarz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Releasable push-to-connect tube fitting
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Patent number 4,685,706
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Issue date Aug 11, 1987
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Clevite Industries Inc.
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Leonard J. Kowal
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Releasable push-to-connect tube fitting
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Patent number 4,621,842
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Issue date Nov 11, 1986
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Imperial Clevite Inc.
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Leonard J. Kowal
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Insulative coupling
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Patent number 4,595,218
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Issue date Jun 17, 1986
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Imperial Clevite Inc.
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John F. Carr
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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-
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Tube bender construction
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Patent number 4,389,873
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Issue date Jun 28, 1983
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Imperial Clevite Inc.
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Albert J. Schwarz
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Tube bender construction
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Patent number 4,379,400
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Issue date Apr 12, 1983
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Imperial Clevite Inc.
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Albert J. Schwarz
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Tube coupling with frangible sleeve
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Patent number 4,304,422
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Issue date Dec 8, 1981
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Gould Inc.
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Albert J. Schwarz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Push-pull fitting
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Patent number 4,123,090
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Issue date Oct 31, 1978
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Imperial-Eastman Corporation
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Mike D. Kotsakis
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...