Masakatu Hayakawa

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sintered body assembly formed from a plurality of independent compa...
- Patent number 4,907,330
- Issue date Mar 13, 1990
- NGK Spark Plug Co., Ltd.
- Shigeaki Akao
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR