US2828024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe positioning device for a drilling derrick
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-07-15
•
Granted: 1958-03-25
•
Expires: 1973-07-15
Abstract
No abstract record available.
Inventors
- 👤 Martin E True
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:01
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1467262A
Cited
US2184051A
Cited
US2206185A
Cited
US2416815A
Cited
US2450934A
Cited
US2478486A
Cited
US2690847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |