Kazumasa Ohtani

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for calcining wet powdery gypsum
- Patent number 4,118,196
- Issue date Oct 3, 1978
- Onoda Cement Company, Limited
- Yoshiharu Fukuda
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES