Document Type and Number:
Japanese Patent JPS5399140
Kind Code:
U
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Application Number:
JP374677U
Publication Date:
August 11, 1978
Filing Date:
January 14, 1977
Export Citation:
International Classes:
B06B1/06; H04B11/00; H04N5/00; H04Q9/00; H04R1/20; H04R1/30; H04R1/34; H04R17/00; (IPC1-7): H04R1/20; B06B1/06; H01L41/10; H04B11/00; H04Q9/00; H04R17/00
Domestic Patent References:
| JP50076819B | ||||
| JPS4820518A | ||||
| JP50063025B | ||||
| JP50062521B |