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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS53101544
Kind Code:
U
Application Number:
JP603177U
Publication Date:
August 16, 1978
Filing Date:
January 20, 1977
Export Citation:
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International Classes:
G03B31/00; H04R1/00; H04R1/10; (IPC1-7): G03B31/00; H04R1/00
Domestic Patent References:
JPS4836719B11973-11-06
JPS357018Y1
JPS3610316Y1