Patent US2994069A successfully refreshed from Google Patents.
US2994069A
Expired / Lapsed
US
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Magnetic control systems
Assignee: RCA Corp
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Filing: 1956-11-30
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Granted: 1961-07-25
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Jan A Rajchman
- 👤 Arthur W Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:15
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/82; H01; H01F; H01F3/00; H01F3/08; H03F; H03F9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2682632A
Cited
US2902676A
Cited
US2818555A
Cited
US2818556A
Cited
US2842755A
Cited
US2869112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |