Document Type and Number:
Japanese Patent JPS5310195
Kind Code:
Y2
Application Number:
JP2555673U
Publication Date:
March 17, 1978
Filing Date:
February 28, 1973
Export Citation:
International Classes:
G03B1/40; G03B23/00; G03B31/00; G03B31/06; (IPC1-7): G03B23/00; G03B31/00
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