Patent US425139A successfully refreshed from Google Patents.
US2981333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well screening method and device therefor
Assignee: Individual
•
Filing: 1957-10-08
•
Granted: 1961-04-25
•
Expires: 1977-10-08
Abstract
No abstract record available.
Inventors
- 👤 Montgomery K Miller
- 👤 William L Kumler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04; E21B43/08; E21B43/082; E21B43/10; F; F16; F16L; F16L55/00; F16L55/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US934076A
Cited
US921337A
Cited
US1604386A
Cited
US1910442A
Cited
US2173034A
Cited
US2167191A
Cited
US2187483A
Cited
US2371385A
Cited
US2500754A
Cited
US2754911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |