Document Type and Number:
Japanese Patent JPS485735
Kind Code:
U
Application Number:
JP4645171U
Publication Date:
January 23, 1973
Filing Date:
June 02, 1971
Export Citation:
International Classes:
G03B19/18; G03B17/16; G03B19/02; G03B31/00; (IPC1-7): G03B19/02; G03B19/18; G03B31/00
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