Document Type and Number:
Japanese Patent JPS4924871
Kind Code:
Y1
Application Number:
JP10942069U
Publication Date:
July 04, 1974
Filing Date:
November 18, 1969
Export Citation:
International Classes:
B63H16/20; B63B7/02; B63B7/04; (IPC1-7): B63B7/04; B63H16/14