US2679161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth progress recording apparatus for wells
Assignee: Individual
•
Filing: 1949-11-03
•
Granted: 1954-05-25
•
Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Jesse E Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:10
CPC Classifications
E; E21; E21B; E21B45/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1322148A
Cited
US1404580A
Cited
US1222502A
Cited
US1484125A
Cited
US1905200A
Cited
US1918388A
Cited
US2304645A
Cited
US2287819A
Cited
US2409745A
Cited
US2326219A
Cited
US2357051A
Cited
US2365014A
Cited
US2390178A
Cited
US2330752A
Cited
US2565951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |