Seiya Sakai

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Toggle-type die-fastening apparatus
- Patent number 4,869,659
- Issue date Sep 26, 1989
- Sumitomo Heavy Industries, Ltd.
- Seiya Sakai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL