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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4940469
Kind Code:
U
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Application Number:
JP7978372U
Publication Date:
April 09, 1974
Filing Date:
July 07, 1972
Export Citation:
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International Classes:
G04G9/00; G04C17/00; G04G99/00; (IPC1-7): G04C17/00



 
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