Patent US1966141A successfully refreshed from Google Patents.
US1966141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of self-illuminating signs
Assignee: KONRAD PROTHMANN
•
Filing: 1933-02-28
•
Granted: 1934-07-10
•
Expires: 1953-02-28
Abstract
No abstract record available.
Inventors
- 👤 Reiss-Schmidt Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
B; B44; B44F; B44F1/00; B44F1/02; B44F1/04; G; G09; G09F; G09F13/00; G09F13/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-07-09 | 1938-01-08 | 1938-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-09 | 1942-01-08 | 1942-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-09 | 1946-01-08 | 1946-07-10 | $7700.00 | Window Closed / Lapsed |