Document Type and Number:
Japanese Patent JPS534081
Kind Code:
Y2
Application Number:
JP1094674U
Publication Date:
February 01, 1978
Filing Date:
January 24, 1974
Export Citation:
International Classes:
G03B31/00; G03B31/02; G03D15/00; G11B5/84; (IPC1-7): G11B5/84; G03B31/02
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