US3012520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible driving mechanism with automatic stop
Assignee: Individual
•
Filing: 1959-11-18
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Granted: 1961-12-12
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Guy A Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:16
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2201/60; E05Y2201/604; E05Y2201/622; E05Y2201/644; E05Y2201/652; E05Y2201/658; E05Y2201/668; E05Y2201/672; E05Y2201/708; E05Y2600/00; E05Y2600/40; E05Y2600/46; E05Y2900/00; E05Y2900/10; E05Y2900/106
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |