Inventor
SATO KEIYA
JP2 patents
Patents
2 patentsUS5692343ADec 2, 1997
Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same
HITACHI LTD7 citations70
US5809702ASep 22, 1998
Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same
HITACHI LTD2 citations59