Patent US2832019A successfully refreshed from Google Patents.
US2832019A
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Servo system using a magnetic amplifier mixer
Assignee: Unisys Corp
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Filing: 1952-11-14
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Granted: 1958-04-22
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Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 Sidney B Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:29
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122; H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/282; H03; H03F; H03F9/00; H03F9/04; Y; Y10; Y10S; Y10S323/00; Y10S323/91
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |