Shigeru Harada

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Isehara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pebble-stone crushing device for use in excavator for laying pipeli...
- Patent number 4,555,064
- Issue date Nov 26, 1985
- Kabushiki Kaisha Komatsu Seisakusho
- Juichi Asano
- E21 - EARTH DRILLING MINING
Information Patent Grant
Power-driven, wedge-operated rock splitter
- Patent number 4,474,410
- Issue date Oct 2, 1984
- Kabushiki Kaisha Komatsu Seisakusho
- Koji Ogaki
- B28 - WORKING CEMENT, CLAY, OR STONE