US2807764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor control system
Assignee: Viking Industries
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Filing: 1954-04-01
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Granted: 1957-09-24
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Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Homer A Engle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
H; H02; H02P; H02P29/00; G; G05; G05B; G05B24/00; G05B24/02; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/16; H02P25/00; H02P25/16; H02P25/32; H02P7/00
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |