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Takayuki Kawafuji
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Tokyo, JP
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last 30 patents
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Patent Grant
Method for water leakage prevention in pipeline and liner for water...
Patent number
5,096,332
Issue date
Mar 17, 1992
Toa Grout Kogyo Kabushiki Kaisha
Takayuki Kawafuji
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Liner for pipeline repair and method for repairing pipelines
Patent number
5,035,539
Issue date
Jul 30, 1991
Toa Grout Kogyo Kabushiki Kaishi
Takayuki Kawafuji
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...