Document Type and Number:
Japanese Patent JPS54176334
Kind Code:
U
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Application Number:
JP7441478U
Publication Date:
December 13, 1979
Filing Date:
June 02, 1978
Export Citation:
International Classes:
G03B21/00; G06K9/00; G06T1/00; (IPC1-7): G03B21/00; G06K9/00