Patent US2051243A successfully refreshed from Google Patents.
US2051243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep well pump
Assignee: Individual
•
Filing: 1934-04-13
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Granted: 1936-08-18
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Expires: 1954-04-13
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Bowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:10
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111; F04B9/113; F04B47/00; F04B47/06; F04B47/08; F04B5/00; F04B5/02; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/126
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) | 1939-08-18 | 1940-02-17 | 1940-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-18 | 1944-02-17 | 1944-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-18 | 1948-02-17 | 1948-08-18 | $7700.00 | Window Closed / Lapsed |