Seiichiro Yamada

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Patents Grantslast 30 patents

Information Patent Grant
Electromagnetic oil pump
- Patent number 5,800,139
- Issue date Sep 1, 1998
- Yamada Hatsudoki Kabushiki Kaisha
- Seiichiro Yamada
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES