Title:
【発明の名称】有線放送電話用電話機回路
Document Type and Number:
Japanese Patent JP2864747
Kind Code:
B2
Inventors:
YONEZAWA TETSUO
Application Number:
JP6091A
Publication Date:
March 08, 1999
Filing Date:
January 07, 1991
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H04M3/02; H04M3/14; H04M11/00; H04Q3/58; H04Q5/00; H04Q5/02; (IPC1-7): H04Q5/02; H04M3/14; H04M11/00
Domestic Patent References:
| JP62207098A | ||||
| JP1243696A | ||||
| JP265449A | ||||
| JP2190093A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)