Patent US5388123A successfully refreshed from Google Patents.
Patent US1393226A successfully refreshed from Google Patents.
Patent JPS5350607A successfully refreshed from Google Patents.
JPS5350607A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Loop communication system
Assignee: Hitachi Ltd
•
Filing: 1976-10-20
•
Granted: —
•
Expires: 1996-10-20
Abstract
Abstract PURPOSE:To make easy for the detection of fault location by providing the folded function to remote stations and to prevent system down by constituting the degeneration loop.
Inventors
- 👤 Seiichiro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-04 05:00
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74; H04B1/745
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.