Katsumasa Osaki

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Otsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Heat-sensitive mimeograph stencil
- Patent number 5,643,680
- Issue date Jul 1, 1997
- Toray Industries, Inc.
- Katsumasa Osaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS