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Susumu Sudo
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Totsuka-ku, Yokahama city, Kanagawa Pref., JP
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last 30 patents
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Patent Grant
Device for preventing leakage at pipe joints
Patent number
4,346,922
Issue date
Aug 31, 1982
Hisao Ohtsuga
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...