US43598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in governor-valves
Assignee: —
•
Filing: —
•
Granted: 1864-07-19
•
Expires: 1881-07-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1867-07-19 | 1868-01-18 | 1868-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1871-07-19 | 1872-01-18 | 1872-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1875-07-19 | 1876-01-18 | 1876-07-19 | $7700.00 | Window Closed / Lapsed |