Takeo Watanabe

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Oscillator actuated hydraulic impulse device
- Patent number 4,342,255
- Issue date Aug 3, 1982
- Mitsui Engineering & Shipbuilding Co., Ltd.
- Takeo Watanabe
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Grant
Hydraulic hammer
- Patent number 4,172,411
- Issue date Oct 30, 1979
- Mitsui Engineering & Shipbuilding Co., Ltd.
- Makoto Matsuda
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS