Kunizo Hiraoka

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Higashi, Onari-cho, Omiya-shi, Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing concrete pipes
- Patent number 4,451,222
- Issue date May 29, 1984
- Kunizo Hiraoka
- B28 - WORKING CEMENT, CLAY, OR STONE