Tomoki Kumayama

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Welding method using heating plate and welding apparatus using the...
- Patent number 6,425,431
- Issue date Jul 30, 2002
- Koito Manufacturing Co., Ltd.
- Toshitaka Naito
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL