US155687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in locomotive spark-arresters
Assignee: —
•
Filing: —
•
Granted: 1874-10-06
•
Expires: 1891-10-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; Y; Y10; Y10S; Y10S55/00; Y10S55/20
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) | 1877-10-05 | 1878-04-06 | 1878-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1881-10-05 | 1882-04-06 | 1882-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1885-10-05 | 1886-04-06 | 1886-10-06 | $7700.00 | Window Closed / Lapsed |