Document Type and Number:
Japanese Patent JPS4973992
Kind Code:
U
Application Number:
JP11985172U
Publication Date:
June 26, 1974
Filing Date:
October 16, 1972
Export Citation:
International Classes:
B63H16/20; (IPC1-7): B63H16/14
Domestic Patent References:
| JPH0414955U | 1992-02-06 |