Patent US2605083A successfully refreshed from Google Patents.
US2605083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drilling wells
Assignee: Individual
•
Filing: 1946-05-13
•
Granted: 1952-07-29
•
Expires: 1966-05-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:58
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US682939A
Cited
US1247092A
Cited
US1348815A
Cited
US1380203A
Cited
US1621569A
Cited
US1772369A
Cited
US1867833A
Cited
US1909659A
Cited
GB417816A
Cited
US2266344A
Cited
US2363142A
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 |