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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57135841
Kind Code:
U
Application Number:
JP2207681U
Publication Date:
August 24, 1982
Filing Date:
February 20, 1981
Export Citation:
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International Classes:
H02H9/06; H01J17/02; H01J17/34; H01T1/16; H02H9/04; (IPC1-7): H02H9/06; H01J17/02