FR519268A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Coupling for the production of electrical oscillations by means of cathode ray tubes
Assignee: DRATHLOSE TELEGRAPHIE GmbH
•
Filing: 1920-07-07
•
Granted: 1921-06-07
•
Expires: 1940-07-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 18:42
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/08; H03F1/12; H03F1/13; H03B; H03B5/00; H03B5/08; H03B5/10
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.