Title:
PRIVACY CIRCUIT FOR BUTTON TELEPHONE SET
Document Type and Number:
Japanese Patent JPS5385104
Kind Code:
A
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Inventors:
SARUTANI MASAHIRO
GOTOU WATARU
GOTOU WATARU
Application Number:
JP23377A
Publication Date:
July 27, 1978
Filing Date:
January 06, 1977
Export Citation:
Assignee:
NAKAYO TELECOMMUNICATIONS
International Classes:
H04Q3/58; H04M1/68; H04M1/72; H04Q3/62; (IPC1-7): H04M1/68; H04M1/72; H04Q3/62
Domestic Patent References:
| JPS5213706A | 1977-02-02 |