Patent US2940488A successfully refreshed from Google Patents.
US2940488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth gauge for power-operated screwdriver, nut-runner, and the like
Assignee: Black and Decker Corp
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Filing: 1959-08-17
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Granted: 1960-06-14
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:33
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0064; Y; Y10; Y10T; Y10T408/00; Y10T408/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US413178A
Cited
US974239A
Cited
GB101195A
Cited
FR686370A
Cited
GB583325A
Cited
US2430044A
Cited
US2613704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |