Document Type and Number:
Japanese Patent JPS5157134
Kind Code:
U
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Application Number:
JP13053774U
Publication Date:
May 06, 1976
Filing Date:
October 30, 1974
Export Citation:
International Classes:
G03C3/00; G03B1/56; G03B17/02; G03B17/18; G03B17/26; (IPC1-7): G03C3/00; G03B1/56