Document Type and Number:
Japanese Patent JPS56102797
Kind Code:
U
Application Number:
JP18254779U
Publication Date:
August 12, 1981
Filing Date:
December 29, 1979
Export Citation:
International Classes:
B63H21/32; B63B29/14; B63J2/12; B63J3/02; (IPC1-7): B63B29/14; B63H21/32; B63J3/02
Domestic Patent References:
| JPS5012954A | 1975-02-10 |