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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS53163119
Kind Code:
U
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Application Number:
JP6832077U
Publication Date:
December 20, 1978
Filing Date:
May 27, 1977
Export Citation:
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International Classes:
H04R9/00; H04R1/00; H04R1/02; H04R1/22; H04R9/02; H04R9/06; (IPC1-7): H04R9/02; H04R1/02; H04R1/22; H04R9/06
Domestic Patent References:
JP51103934B
JPS53126918A1978-11-06
Foreign References:
US2217177A1940-10-08



 
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