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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS4953702
Kind Code:
Application Number:
Publication Date:
May 13, 1974
Filing Date:
August 15, 1972
Export Citation:
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International Classes:
B60R11/02; G10K11/00; G11B31/00; H04B1/06; (IPC1-7): H04B1/06; B60R18/00; G10K11/00; G11B31/00