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US40723A
Expired / Lapsed
US
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Improvement in force-pumps
Assignee: —
•
Filing: —
•
Granted: 1863-11-24
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Expires: 1880-11-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:42
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/102; F04B39/1033; Y; Y10; Y10S; Y10S430/00; Y10S430/162; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7559
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) | 1866-11-23 | 1867-05-25 | 1867-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-11-23 | 1871-05-25 | 1871-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-11-23 | 1875-05-25 | 1875-11-24 | $7700.00 | Window Closed / Lapsed |