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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS51118741
Kind Code:
U
Application Number:
JP11930574U
Publication Date:
September 27, 1976
Filing Date:
October 04, 1974
Export Citation:
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International Classes:
G01N21/59; G02B6/00; G02B27/00; (IPC1-7): G02B27/00; G02B5/14
Foreign References:
US3317738A1967-05-02
US3060319A1962-10-23