US2540347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated pumping mechanism
Assignee: JAY W SCOVEL
•
Filing: 1948-09-13
•
Granted: 1951-02-06
•
Expires: 1968-09-13
Abstract
No abstract record available.
Inventors
- 👤 Vester O Pounds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:36
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; Y; Y10; Y10S; Y10S417/00; Y10S417/904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US949559A
Cited
GB191218588A
Cited
US1294266A
Cited
US1619474A
Cited
US2167623A
Cited
US2390124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |