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Pipe joints
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Patent number 5,255,942
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Issue date Oct 26, 1993
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Fusion Group PLC
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David M. A. Kenworthy
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Electro-fusion fittings
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Patent number 5,163,713
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Issue date Nov 17, 1992
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Fusion Group PLC
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David Brettell
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Pipe clamps
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Patent number 5,129,636
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Issue date Jul 14, 1992
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Fusion Group PLC
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Eric Bridgstock
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Interconnected movable members
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Patent number 5,104,102
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Issue date Apr 14, 1992
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Fusion Group PLC
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James S. Buxton
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Butt-welding of pipes
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Patent number 4,957,570
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Issue date Sep 18, 1990
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Fusion Group PLC
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Patrick W. Jenkins
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL