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Shuntaro Yoshida
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Tokyo, JP
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last 30 patents
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Patent Grant
Stencil duplicator providing automatic stencil performation, chargi...
Patent number
4,628,813
Issue date
Dec 16, 1986
Riso Kagaku Corporation
Takanori Hasegawa
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
Divided exposure method and device
Patent number
4,323,775
Issue date
Apr 6, 1982
Riso Kagaku Corporation
Takanori Hasegawa
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS