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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5315372
Kind Code:
B2
Application Number:
JP373273A
Publication Date:
May 24, 1978
Filing Date:
December 29, 1972
Export Citation:
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International Classes:
G03B7/093; G03B9/58; G03B17/18; G03B17/20; (IPC1-7): G03B7/08; G03B17/18; G03B9/58