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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0441492
Kind Code:
U
Application Number:
JP8359790U
Publication Date:
April 08, 1992
Filing Date:
August 09, 1990
Export Citation:
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International Classes:
B63B29/00; B63B49/00; (IPC1-7): B63B29/00; B63B49/00
Domestic Patent References:
JPS633301A1988-01-08
JPS4918476B11974-05-10