US2978846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill and countersink tool
Assignee: Individual
•
Filing: 1956-10-08
•
Granted: 1961-04-11
•
Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Lee H Barron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:11
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/14; B28D1/146; B24; B24B; B24B5/00; B24B5/01; B24D; B24D7/00; B24D7/18; Y; Y10; Y10T; Y10T408/00; Y10T408/81; Y10T408/89; Y10T408/905; Y10T408/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US152442A
Cited
US2020117A
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US2057421A
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US2360798A
Cited
US2362260A
Cited
US2359920A
Cited
US2370970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |