Keiji Murai

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Higashiosaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Two blade type impulse wrench
- Patent number 4,920,836
- Issue date May 1, 1990
- Yokota Industrial Co., Ltd.
- Tadakatsu Sugimoto
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Two-blade type impulse wrench
- Patent number 4,766,787
- Issue date Aug 30, 1988
- Yokota Industrial Co., Ltd.
- Tadakatsu Sugimoto
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS