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US777451A
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US
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Device for applying fog-signals to the railways, for removing them, and for indicating their position, &c.
Assignee: GEORGE NICHOLLS PRATT
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Filing: 1904-05-27
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Granted: 1904-12-13
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Expires: 1924-05-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas Templeman
- 👤 Richard Ashwin Drope Gough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:11
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/20; B61L5/203
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) | 1907-12-13 | 1908-06-13 | 1908-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-12-13 | 1912-06-13 | 1912-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-12-13 | 1916-06-13 | 1916-12-13 | $7700.00 | Window Closed / Lapsed |