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Patent Searching and Data

Document Type and Number:
Japanese Patent JPH0452709
Kind Code:
Application Number:
Publication Date:
December 10, 1992
Filing Date:
June 22, 1984
Export Citation:
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International Classes:
G04B27/04; G04B27/02; G04C9/00; (IPC1-7): G04B27/02; G04B27/04; G04C9/00

Next Patent: JPH0452710