US2746722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible drill bit
Assignee: Individual
•
Filing: 1950-07-17
•
Granted: 1956-05-22
•
Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Schneider Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:37
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/003; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/907; Y10T408/909; Y10T408/9098; Y10T408/90993
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US54199A
Cited
US54226A
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US387448A
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US1803267A
Cited
US658060A
Cited
US878145A
Cited
US2101566A
Cited
US2499282A
Cited
US2519861A
Cited
US2558341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |