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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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Method of replacing branch mains
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Patent number 5,433,251
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Issue date Jul 18, 1995
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British Gas PLC
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Anthony D. Elgar
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Method of replacing branch mains
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Patent number 5,345,971
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Issue date Sep 13, 1994
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British Gas plc
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Anthony D. Elgar
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Head for replacing mains
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Patent number 5,287,893
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Issue date Feb 22, 1994
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British Gas PLC
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Anthony D. Elgar
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Replacement main having nozzle and vanes
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Patent number 5,282,494
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Issue date Feb 1, 1994
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British Gas plc
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Anthony D. Elgar
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...