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US2987662A
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Speed comparing and controlling servosystem
Assignee: Individual
•
Filing: 1958-12-09
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Granted: 1961-06-06
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Expires: 1978-12-09
Abstract
No abstract record available.
Inventors
- 👤 Robert S Jamieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:38
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/52; G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/149
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |