Patent DE599600C successfully refreshed from Google Patents.
Patent FR985555A successfully refreshed from Google Patents.
FR985555A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Telephone repeater without balancer for two-wire circuits
Assignee: Pierre Finet
•
Filing: 1949-02-23
•
Granted: 1951-07-20
•
Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Pierre Finet
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 10:15
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/36
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.