US2936010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw driver bit
Assignee: PL Robertson Manufacturing Co Ltd
•
Filing: 1956-12-17
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Granted: 1960-05-10
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Carl H Ansingh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |