Masao Sakamoto

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Hyogo, JP

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Patents Applicationslast 30 patents

Information Patent Application
Corrugated plate of plastics used for method of construction for dr...
- Publication number 20030118402
- Publication date Jun 26, 2003
- Masao Sakamoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Method of construction for draining the ground and the like
- Publication number 20030118405
- Publication date Jun 26, 2003
- Masao Sakamoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES