Document Type and Number:
Japanese Patent JPS6417890
Kind Code:
U
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Application Number:
JP11195587U
Publication Date:
January 30, 1989
Filing Date:
July 23, 1987
Export Citation:
International Classes:
B63B3/48; B63B5/24; (IPC1-7): B63B5/24; B63B3/48
Domestic Patent References:
| JPS4881298A | 1973-10-31 |