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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57198144
Kind Code:
U
Application Number:
JP8620581U
Publication Date:
December 16, 1982
Filing Date:
June 13, 1981
Export Citation:
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International Classes:
H04H40/36; H04H1/00; (IPC1-7): H04H5/00
Domestic Patent References:
JPS5736055B21982-08-02
JPS5736056B21982-08-02