Yoshiaki Iidaka

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electron gun for color picture tube
- Patent number 4,672,261
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Shoji Shirai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron gun for color picture tube
- Patent number 4,599,534
- Issue date Jul 8, 1986
- Hitachi, Ltd.
- Shoji Shirai
- H01 - BASIC ELECTRIC ELEMENTS