Hiroji Kumagai

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Narashino, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating a phosphor screen of a color television pictu...
- Patent number 4,209,551
- Issue date Jun 24, 1980
- Toppan Printing Co., Ltd.
- Tatsuo Masaki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS