FR837639A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Gyromagnetic compass
Assignee: EQUIP D AVIONS ET D AERODROMES
•
Filing: 1937-10-27
•
Granted: 1939-02-15
•
Expires: 1957-10-27
Abstract
No abstract record available.
Inventors
- 👤 Bruel
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/36
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.