US2001012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston lift for pumping of liquids
Assignee: Individual
•
Filing: 1934-03-21
•
Granted: 1935-05-14
•
Expires: 1954-03-21
Abstract
No abstract record available.
Inventors
- 👤 Everett K Burgher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B37/00; E21B37/02; E21B37/04; F; F04; F04B; F04B47/00; F04B47/12
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) | 1938-05-13 | 1938-11-12 | 1939-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-05-13 | 1942-11-12 | 1943-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-05-13 | 1946-11-12 | 1947-05-14 | $7700.00 | Window Closed / Lapsed |