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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0113680
Kind Code:
B2
Application Number:
JP8403181A
Publication Date:
March 07, 1989
Filing Date:
June 01, 1981
Export Citation:
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Assignee:
NIPPON ELECTRIC CO
International Classes:
H04R17/00; B06B1/06; H01H57/00



 
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