Osamu Toyoshima

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Takatsuki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Boring device for opening passages to branch portions of a lined ma...
- Patent number 4,882,470
- Issue date Nov 21, 1989
- Tokyo Gas Kabushiki Kaisha
- Katsuaki Zenbayashi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL