US2604850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplemental equipment for pumping wells
Assignee: Individual
•
Filing: 1948-10-18
•
Granted: 1952-07-29
•
Expires: 1968-10-18
Abstract
No abstract record available.
Inventors
- 👤 Deldon E Carlin
- 👤 Holt Charlie Kyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:38
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1017722A
Cited
US1731688A
Cited
US1624527A
Cited
US1976098A
Cited
US2084645A
Cited
US2217287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |