FR939451A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Electric resonance chamber
Assignee: AT&T Inc
•
Filing: 1946-12-24
•
Granted: 1948-11-16
•
Expires: 1966-12-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 04:13
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
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.