Patent US6711241B1 successfully refreshed from Google Patents.
Patent FR844172A successfully refreshed from Google Patents.
FR844172A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to twin powertrains for airplanes
Assignee: CONST AERONAUTIQUES DU CT SOC
•
Filing: 1938-03-28
•
Granted: 1939-07-20
•
Expires: 1958-03-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/306
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.