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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS56117724
Kind Code:
U
Application Number:
JP1541280U
Publication Date:
September 09, 1981
Filing Date:
February 08, 1980
Export Citation:
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International Classes:
G03B1/02; G03B17/00; (IPC1-7): G03B1/02; G03B17/00