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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4968374
Kind Code:
U
Application Number:
JP11324672U
Publication Date:
June 14, 1974
Filing Date:
September 29, 1972
Export Citation:
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International Classes:
G03B42/04; G03C3/00; (IPC1-7): G03B41/18; G03C3/00



 
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