US551930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric railway-train signaling
Assignee: —
•
Filing: —
•
Granted: 1895-12-24
•
Expires: 1912-12-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
H; H01; H01R; H01R24/00; H01R24/84; B; B61; B61L; B61L15/00; B61L15/0009
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) | 1898-12-23 | 1899-06-24 | 1899-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-12-24 | 1903-06-25 | 1903-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-12-24 | 1907-06-25 | 1907-12-25 | $7700.00 | Window Closed / Lapsed |