Document Type and Number:
Japanese Patent JPS5631991
Kind Code:
U
Application Number:
JP11396179U
Publication Date:
March 28, 1981
Filing Date:
August 17, 1979
Export Citation:
International Classes:
B63B3/00; B63B5/22; B63B5/24; B63B59/02; (IPC1-7): B63B5/24; B63B5/22
Domestic Patent References:
| JPS493754U | 1974-01-12 |