US769214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block switch and signal system for electric railroads.
Assignee: GAYNOR TRAIN CONTROL Co
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Filing: 1902-08-19
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Granted: 1904-09-06
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Expires: 1922-08-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Gaynor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/18; B61L1/181; B61L1/187
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) | 1907-09-06 | 1908-03-07 | 1908-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-09-06 | 1912-03-07 | 1912-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-09-06 | 1916-03-07 | 1916-09-06 | $7700.00 | Window Closed / Lapsed |