← Back to Patent Explorer
JPS53908A Expired / Lapsed JP ⏱️ 0.0 years remaining

Subscriber scanning system

Assignee: Oki Electric Industry Co Ltd
•
Filing: 1976-06-25
•
Granted: —
•
Expires: 1996-06-25
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract PURPOSE:To improve the reliability and reduce the cost by using an empty speed line after the end of the speech for the subscriber scanning thereby preventing instantaneous disconnection, error in dialing pulse, erroneous exchanger recognition and the like.

Inventors

  • 👤 Yukio Nakamura
  • 👤 Kanji Arai

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 10:45
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/58; H04Q3/60

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.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag