Fujio Tamura

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Sendai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Quartz vacuum gauge
- Patent number 5,033,306
- Issue date Jul 23, 1991
- Seiko Electronic Components Ltd.
- Fujio Tamura
- G01 - MEASURING TESTING
Information Patent Grant
Vacuum gauge of thermo-conductive type with quartz oscillator
- Patent number 4,959,999
- Issue date Oct 2, 1990
- Seiko Electronic Components Ltd.
- Fujio Tamura
- G01 - MEASURING TESTING