US2540123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insert strainer plug for well casings
Assignee: Individual
•
Filing: 1945-01-06
•
Granted: 1951-02-06
•
Expires: 1965-01-06
Abstract
No abstract record available.
Inventors
- 👤 Myron M Kinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/082; E21B43/11; E21B43/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789867A
Cited
US828956A
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US1092040A
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US1847613A
Cited
US2078426A
Cited
US2302567A
Cited
US2212044A
Cited
US2381929A
Cited
US2426106A
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 |