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Frame for sign
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Patent number 5,950,969
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Issue date Sep 14, 1999
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British Gas plc
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Robert Neal Bennett
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B60 - VEHICLES IN GENERAL
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Pipe blocking technique
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Patent number 5,878,784
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Issue date Mar 9, 1999
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British Gas plc
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Brian Thomas Sales
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E03 - WATER SUPPLY SEWERAGE
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Enhancing pipes
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Patent number 5,845,668
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Issue date Dec 8, 1998
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British Gas PLC
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John Taylor
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Seal for enhancing pipes
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Patent number 5,738,357
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Issue date Apr 14, 1998
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British Gas PLC
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John Taylor
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Seal for enhancing pipes
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Patent number 5,551,704
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Issue date Sep 3, 1996
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British Gas PLC
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John Taylor
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Enhancing pipes
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Patent number 5,482,076
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Issue date Jan 9, 1996
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British Gas PLC
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John Taylor
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...