Patent CH153644A successfully refreshed from Google Patents.
CH153644A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Threshold for electrical signal systems at road curves and crossings.
Assignee: Rogger Sen Jos
•
Filing: 1931-03-16
•
Granted: —
•
Expires: 1951-03-16
Abstract
No abstract record available.
Inventors
- 👤 Rogger Sen Jos
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/02
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.