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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS509426
Kind Code:
A
Application Number:
JP4164174A
Publication Date:
January 30, 1975
Filing Date:
April 10, 1974
Export Citation:
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International Classes:
G03B31/00; G03B19/18; (IPC1-7): G03B19/18



 
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