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Mechanical plug assembly
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Patent number 6,250,337
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Issue date Jun 26, 2001
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Cherne Industries Incorporated
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Marc P. Bevacco
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Frangible sealing plug for pipelines
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Patent number 6,182,704
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Issue date Feb 6, 2001
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Cherne Industries Incorporated
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Marc P. Bevacco
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Remote positioning pneumatic plug
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Patent number D358871
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Issue date May 30, 1995
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Cherne Industries Incorporated
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Allen D. Mathison
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D23 - Environmental heating and cooling
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Pneumatic plug for clean-out tees
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Patent number 5,353,841
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Issue date Oct 11, 1994
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Cherne Industries Incorporated
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Allen D. Mathison
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Pneumatic test plug
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Patent number D350704
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Issue date Sep 20, 1994
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Cherne Industries Incorporated
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Allen D. Mathison
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D10 - Measuring, testing, or signalling instruments
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Drain flusher device
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Patent number 5,329,646
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Issue date Jul 19, 1994
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Cherne Industries Incorporated
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Marc P. Bevacco
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B08 - CLEANING
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Drain flusher
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Patent number D339405
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Issue date Sep 14, 1993
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Cherne Industries Incorporated
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Marc P. Bevacco
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D23 - Environmental heating and cooling
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Mechanical plug for clean-out tees
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Patent number 5,035,266
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Issue date Jul 30, 1991
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Cherne Industries Incorporated
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Bryan R. Benson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...