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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5421569
Kind Code:
U
Application Number:
JP9321877U
Publication Date:
February 13, 1979
Filing Date:
July 13, 1977
Export Citation:
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International Classes:
G04B19/28; G04B23/02; (IPC1-7): G04B23/02
Domestic Patent References:
JPS4833333U1973-04-21
JPS4832356U1973-04-19



 
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