Document Type and Number:
Japanese Patent JPH03119711
Kind Code:
U
Application Number:
JP2947690U
Publication Date:
December 10, 1991
Filing Date:
March 22, 1990
Export Citation:
International Classes:
G01C9/02; G01B3/08; G01C9/28; G01C15/06; (IPC1-7): G01C9/02; G01B3/08; G01C15/06
Domestic Patent References:
| JP62167115B | ||||
| JPS5225544B1 | 1977-07-08 |