Assignee
DAIHO CONSTRUCTION CO LTD
JP·3 granted patents·91 citations·filing 1984–1990
Top patents by PatentIndex Score
3 records- 0190US4607889AShield tunnel boring machineDAIHO CONSTRUCTION CO LTD·Filed 1984·Granted Aug 26, 1986·51 cites·4 claims
- 0250US4797031ACaisson sinking methodDAIHO CONSTRUCTION CO LTD·Filed 1987·Granted Jan 10, 1989·16 cites·1 claims
- 0348US5032039AUnderground excavatorDAIHO CONSTRUCTION CO LTD·Filed 1990·Granted Jul 16, 1991·24 cites·4 claims
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