Hisayoshi Nakatsuka

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Mitaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Circuit connection for coils wound on yoke of an electromagnetic pi...
- Patent number 4,644,518
- Issue date Feb 17, 1987
- Namiki Precision Jewel Co., Ltd.
- Hisayoshi Nakatsuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Grounding circuit for pickup cartridge moving coil
- Patent number 4,637,009
- Issue date Jan 13, 1987
- Namiki Precision Jewel Co., Ltd.
- Hisayoshi Nakatsuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Shielded line
- Patent number 4,388,486
- Issue date Jun 14, 1983
- Namiki Precision Jewel Co., Ltd.
- Hisayoshi Nakatsuka
- H01 - BASIC ELECTRIC ELEMENTS