Document Type and Number:
Japanese Patent JPS4973994
Kind Code:
U
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Application Number:
JP11858872U
Publication Date:
June 26, 1974
Filing Date:
October 16, 1972
Export Citation:
International Classes:
B63H11/08; B63H11/10; B63H11/107; B63H20/00; (IPC1-7): B63H11/10; B63H21/26