Document Type and Number:
Japanese Patent JPH02115123
Kind Code:
U
Application Number:
JP2341489U
Publication Date:
September 14, 1990
Filing Date:
March 01, 1989
Export Citation:
International Classes:
E03D9/00; G01D11/30; G01D21/00; G01V8/12; (IPC1-7): G01D21/00; E03D9/00; G01D11/30; G01V9/04
Domestic Patent References:
| JPH0151965B2 | 1989-11-07 | |||
| JP60133213B | ||||
| JP61071436B |