US36995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in propellers for land conveyance
Assignee: —
•
Filing: —
•
Granted: 1862-11-25
•
Expires: 1879-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:03
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0064; B61H15/0071; B61H15/0085; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1865-11-24 | 1866-05-26 | 1866-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1869-11-24 | 1870-05-26 | 1870-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1873-11-24 | 1874-05-26 | 1874-11-25 | $7700.00 | Window Closed / Lapsed |