US2446795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill
Assignee: Individual
•
Filing: 1944-10-14
•
Granted: 1948-08-10
•
Expires: 1964-10-14
Abstract
No abstract record available.
Inventors
- 👤 Earl H Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:53
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; E21B10/627; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |