Document Type and Number:
Japanese Patent JPH0441492
Kind Code:
U
Application Number:
JP8359790U
Publication Date:
April 08, 1992
Filing Date:
August 09, 1990
Export Citation:
International Classes:
B63B29/00; B63B49/00; (IPC1-7): B63B29/00; B63B49/00
Domestic Patent References:
JPS633301A | 1988-01-08 | |||
JPS4918476B1 | 1974-05-10 |