Document Type and Number:
Japanese Patent JPS57117293
Kind Code:
U
Application Number:
JP422481U
Publication Date:
July 20, 1982
Filing Date:
January 16, 1981
Export Citation:
International Classes:
B63H16/02; B63B7/08; B63B35/73; (IPC1-7): B63B7/08; B63B35/72