Title:
【発明の名称】DTMF信号生成回路
Document Type and Number:
Japanese Patent JP3096365
Kind Code:
B2
Inventors:
Masayuki Iioka
Application Number:
JP33917292A
Publication Date:
October 10, 2000
Filing Date:
December 18, 1992
Export Citation:
Assignee:
Oki Electric Industry Co., Ltd.
International Classes:
H04B7/26; H04M1/50; H04Q1/45; (IPC1-7): H04M1/50; H04Q1/45
Domestic Patent References:
| JP61258553A |
Attorney, Agent or Firm:
Yasunari Kakimoto