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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4946710
Kind Code:
Y1
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Application Number:
JP4289970U
Publication Date:
December 20, 1974
Filing Date:
May 04, 1970
Export Citation:
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International Classes:
G04B19/247; G04B19/24; G04B19/25; (IPC1-7): G04B19/24



 
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