Patent US3228838A successfully refreshed from Google Patents.
US1024444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic signal-operator.
Assignee: ORLO J HAMLIN
•
Filing: 1908-10-17
•
Granted: 1912-04-23
•
Expires: 1928-10-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Gill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/515
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) | 1915-04-23 | 1915-10-23 | 1916-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-04-23 | 1919-10-23 | 1920-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-04-23 | 1923-10-23 | 1924-04-23 | $7700.00 | Window Closed / Lapsed |