Patent US2494590A successfully refreshed from Google Patents.
Patent US1823960A successfully refreshed from Google Patents.
US1823960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Totalizing counter
Assignee: Individual
•
Filing: 1930-02-17
•
Granted: 1931-09-22
•
Expires: 1950-02-17
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand B Troutman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:48
CPC Classifications
G; G08; G08C; G08C13/00; G08C13/02
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-09-21 | 1935-03-23 | 1935-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-21 | 1939-03-23 | 1939-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-21 | 1943-03-23 | 1943-09-22 | $7700.00 | Window Closed / Lapsed |