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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH02136439
Kind Code:
U
Application Number:
JP4574489U
Publication Date:
November 14, 1990
Filing Date:
April 18, 1989
Export Citation:
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International Classes:
H02H3/18; H02H3/20; H02H11/00; (IPC1-7): H02H11/00; H02H3/18; H02H3/20
Domestic Patent References:
JPS59185930A1984-10-22



 
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