Tutomu Yamamoto

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Kawagoe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing polyurethane foam
- Patent number 4,988,271
- Issue date Jan 29, 1991
- Human Industry Corporation
- Sadao Kumasaka
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL