Document Type and Number:
Japanese Patent JPS4932388
Kind Code:
U
Application Number:
JP7426072U
Publication Date:
March 20, 1974
Filing Date:
June 22, 1972
Export Citation:
International Classes:
G01B7/04; B63B21/00; G01B7/00; (IPC1-7): B63B21/00; G01B7/04
Domestic Patent References:
| JP27005070A |