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Yoichi Hirokawa
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Kamakura, JP
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last 30 patents
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Patent Grant
Access alarming method and apparatus for working vehicle
Patent number
4,937,795
Issue date
Jun 26, 1990
Tokyo Keiki Co., Ltd.
Ryohei Motegi
B60 - VEHICLES IN GENERAL
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Patent Grant
Automatic steering apparatus for ships
Patent number
4,336,594
Issue date
Jun 22, 1982
Tokyo Keiki Co., Ltd.
Isao Masuzawa
G05 - CONTROLLING REGULATING