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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57141420
Kind Code:
U
Application Number:
JP2917781U
Publication Date:
September 04, 1982
Filing Date:
February 28, 1981
Export Citation:
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International Classes:
H03H19/00; G06G7/184; G06G7/186; (IPC1-7): H03H19/00; G06G7/184