US911609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep-well pump.
Assignee: Individual
•
Filing: 1907-10-29
•
Granted: 1909-02-09
•
Expires: 1927-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:51
CPC Classifications
F; F04; F04B; F04B47/00
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) | 1912-02-09 | 1912-08-10 | 1913-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-02-09 | 1916-08-10 | 1917-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-02-09 | 1920-08-10 | 1921-02-09 | $7700.00 | Window Closed / Lapsed |