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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS50134640
Kind Code:
A
Application Number:
JP4091874A
Publication Date:
October 24, 1975
Filing Date:
April 15, 1974
Export Citation:
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International Classes:
G03B19/18; G03B21/36; (IPC1-7): G03B21/36



 
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