US644475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump.
Assignee: EVERETT W BROOKS
•
Filing: 1899-06-12
•
Granted: 1900-02-27
•
Expires: 1919-06-12
Abstract
No abstract record available.
Inventors
- 👤 William S Sharpneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/12
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) | 1903-02-27 | 1903-08-29 | 1904-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-02-27 | 1907-08-29 | 1908-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-02-27 | 1911-08-29 | 1912-02-28 | $7700.00 | Window Closed / Lapsed |