US3397643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged motor reciprocating well pump
Assignee: HENRY E JEPSEN
•
Filing: 1967-03-13
•
Granted: 1968-08-20
•
Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Henry E Jepsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:22
CPC Classifications
F; F04; F04B; F04B17/00; F04B17/03; F04B47/00; F04B47/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1830258A
Cited
US2068729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |