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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5180168
Kind Code:
U
Application Number:
JP15462574U
Publication Date:
June 25, 1976
Filing Date:
December 20, 1974
Export Citation:
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International Classes:
G04B39/02; G04B37/00; G04B37/18; (IPC1-7): G04B37/00