US2869390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic drive speed control
Assignee: Gisholt Machine Co
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Filing: 1954-01-04
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Granted: 1959-01-20
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Expires: 1974-01-04
Abstract
No abstract record available.
Inventors
- 👤 Leifer Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:39
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q5/00; B23Q2705/00; B23Q2705/005; F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19437
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |