Patent FR544422A successfully refreshed from Google Patents.
FR544422A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Oil switch with resistance
Assignee: Rheinmetall Air Defence AG
•
Filing: 1921-12-10
•
Granted: 1922-09-22
•
Expires: 1941-12-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 07:52
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/16
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.