Patent DE475057C successfully refreshed from Google Patents.
DE475057C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Display device for railroad trains on platforms with a track on both sides
Assignee: ERICH GAEDGENS
•
Filing: 1928-03-09
•
Granted: 1929-04-19
•
Expires: 1948-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 00:52
CPC Classifications
B; B61; B61L; B61L25/00
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.