Shigeyoshi Nagata

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flow meter with helical toothed rotors having no pulsation and zero...
- Patent number 4,329,130
- Issue date May 11, 1982
- Oval Engineering Company Limited
- Shigeyoshi Nagata
- G01 - MEASURING TESTING
Information Patent Grant
Positive displacement flow meter with helical-toothed rotors
- Patent number 4,224,015
- Issue date Sep 23, 1980
- Oval Engineering Co., Ltd.
- Shigeyoshi Nagata
- G01 - MEASURING TESTING