FR851899A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to anti-fading regulators for television receivers
Assignee: Telefunken AG
•
Filing: 1939-03-21
•
Granted: 1940-01-16
•
Expires: 1959-03-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52; H04N5/53
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.