Patent JPS5890832A successfully refreshed from Google Patents.
JPS5890832A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Echo canceller
Assignee: Toshiba Corp
•
Filing: 1981-11-26
•
Granted: —
•
Expires: 2001-11-26
Abstract
Abstract Translated from Japanese (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Inventors
- 👤 Shigenobu Minami
- 👤 重信 南
- 👤 Tadamichi Kawasaki
- 👤 川崎 忠道
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-29 23:48
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/20; H04B3/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.