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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS56974
Kind Code:
B1
Application Number:
JP9730769A
Publication Date:
January 10, 1981
Filing Date:
December 05, 1969
Export Citation:
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International Classes:
H03H19/00; H03H17/06; (IPC1-7): H03H17/06



 
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