Patent US2485763A successfully refreshed from Google Patents.
US1369146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signaling system
Assignee: Individual
•
Filing: 1920-06-28
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Granted: 1921-02-22
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Expires: 1940-06-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; G04C21/30; G04C21/32
Claims Analysis
Total Claims: 0
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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) | 1924-02-22 | 1924-08-23 | 1925-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-02-22 | 1928-08-23 | 1929-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-02-22 | 1932-08-23 | 1933-02-22 | $7700.00 | Window Closed / Lapsed |