US2833118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spud driving rig
Assignee: JOHN A ROEBLING S SONS CORP
•
Filing: 1954-03-26
•
Granted: 1958-05-06
•
Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Nixon Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:45
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0836; E02B17/0854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2686420A
Cited
US852898A
Cited
US1114832A
Cited
US1725183A
Cited
US2308743A
Cited
US2352370A
Cited
US2592448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |