Sadao Murai

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Hitakata, JA

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing resin tubes alternately having a thick wall...
- Patent number 4,036,930
- Issue date Jul 19, 1977
- Sekisui Kagaku Kogyo Kabushiki Kaisha
- Sadao Murai
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL