FR891312A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Group of electric lanterns for signaling the tail of trains
Assignee: Compagnie de Signaux et dEntreprises Electriques SA
•
Filing: 1942-11-03
•
Granted: 1944-03-03
•
Expires: 1962-11-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/12; B61L5/18
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.