US166048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in pumps for tubular wells
Assignee: —
•
Filing: —
•
Granted: 1875-07-27
•
Expires: 1892-07-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1073
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) | 1878-07-26 | 1879-01-25 | 1879-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-07-26 | 1883-01-25 | 1883-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-07-26 | 1887-01-25 | 1887-07-27 | $7700.00 | Window Closed / Lapsed |