Fumiko Koyama

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Stencil sheet unit and method of making print stencil using the same
- Patent number 5,992,316
- Issue date Nov 30, 1999
- Riso Kagaku Corporation
- Satoru Komata
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS