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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5669721
Kind Code:
U
Application Number:
JP15001679U
Publication Date:
June 09, 1981
Filing Date:
October 31, 1979
Export Citation:
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International Classes:
G03B15/02; (IPC1-7): G03B15/02
Domestic Patent References:
JPS4732784U1972-12-12
JPS5185718A1976-07-27



 
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