Inventor
SHIBATANI KANJI
US4 patents
Patents
4 patentsUS5330292AJul 19, 1994
System and method for transmitting and calculating data in shield machine
KOMATSU MFG CO LTD41 citations91
US5276367AJan 4, 1994
Offset drift reducing device for use in a differential amplification circuit
KOMATSU MFG CO LTD9 citations71
US5199818AApr 6, 1993
Method and apparatus for detecting collapse of natural ground in shield driving method
KOMATSU MFG CO LTD3 citations61
US5208538AMay 4, 1993
Apparatus having a pair of magnetic field generating cables for measuring position of an underground excavator
KOMATSU MFG CO LTD6 citations59