Document Type and Number:
Japanese Patent JPH03121996
Kind Code:
U
Application Number:
JP3097390U
Publication Date:
December 12, 1991
Filing Date:
March 28, 1990
Export Citation:
International Classes:
B63B35/73; B63H9/04; (IPC1-7): B63H9/04; B63B35/73
Domestic Patent References:
| JPS60252093A | 1985-12-12 | |||
| JP57142578B | ||||
| JP52167798B |