Patent US2742550A successfully refreshed from Google Patents.
Patent US5254113A successfully refreshed from Google Patents.
FR39690E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to assemblies using electronic relays
Assignee: Compagnie Francaise Thomson Houston SA
•
Filing: 1931-01-28
•
Granted: 1932-02-11
•
Expires: 1951-01-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/18
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.