Yoshiharu Yoshikawa

Follow

Person

Gunma, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Valve means for use in a concrete material pump
- Patent number 4,142,846
- Issue date Mar 6, 1979
- Niigata Engineering Co., Ltd.
- Yoshiharu Yoshikawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...