US1585378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal well pump
Assignee: Individual
•
Filing: 1923-01-31
•
Granted: 1926-05-18
•
Expires: 1943-01-31
Abstract
No abstract record available.
Inventors
- 👤 Julian F Denison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:04
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/02; F04D15/0209; F04D15/0218
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) | 1929-05-17 | 1929-11-16 | 1930-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-17 | 1933-11-16 | 1934-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-17 | 1937-11-16 | 1938-05-18 | $7700.00 | Window Closed / Lapsed |