Patent US2025345A successfully refreshed from Google Patents.
FR833529A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to directional antennas
Assignee: Compagnie Francaise Thomson Houston SA
•
Filing: 1937-06-15
•
Granted: 1938-10-24
•
Expires: 1957-06-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 12:21
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24
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.