FR487269A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device for ensuring the electrical continuity of railway and tram tracks
Assignee: JACQUES STIEFFEL
•
Filing: 1917-10-20
•
Granted: 1918-06-19
•
Expires: 1937-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jacques Stieffel
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 09:37
CPC Classifications
B; B60; B60M; B60M5/00
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.