CH180202A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Circuit arrangement for multi-conductor cables with four-wire circuits.
Assignee: Bell Telephone Mfg
•
Filing: 1933-05-09
•
Granted: —
•
Expires: 1953-05-09
Abstract
No abstract record available.
Inventors
- 👤 Telephone Manufacturing C Bell
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-08 17:59
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/32; H04B3/34
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.