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Pipe elbows and methods of manufacture
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Patent number 10,436,370
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Issue date Oct 8, 2019
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Georg Fischer Central Plastics LLC
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Harvey E. Svetlik
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Synthetic resin fusion body
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Patent number 7,556,848
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Issue date Jul 7, 2009
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Honda Motor Co., Ltd.
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Kazuyori Kito
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Tongue and groove snap-fit pipe coupling
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Patent number 5,007,666
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Issue date Apr 16, 1991
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C & L Development Inc.
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Vincent Kyfes
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3741849
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Patent number 3,741,849
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Issue date Jun 26, 1973
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent number 3,228,817
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Issue date Jan 11, 1966
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2713195
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Patent number 2,713,195
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Issue date Jul 19, 1955
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL