US2749090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable tool drill
Assignee: Individual
•
Filing: 1951-10-16
•
Granted: 1956-06-05
•
Expires: 1971-10-16
Abstract
No abstract record available.
Inventors
- 👤 Tom N Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:12
CPC Classifications
B; B60; B60P; B60P3/00; E; E21; E21B; E21B1/00; E21B1/02; E21B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US801528A
Cited
US2000805A
Cited
US1973197A
Cited
US2367248A
Cited
US2220271A
Cited
US2455917A
Cited
US2560676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |