Kazumasa Nakayama

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Corrugated synthetic resin pipe
- Patent number 6,131,616
- Issue date Oct 17, 2000
- Totaku Industries, Inc.
- Yoshiaki Tatsuta
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...