US2972059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biased carrier for magnetic amplifiers
Assignee: Unisys Corp
•
Filing: 1954-11-12
•
Granted: 1961-02-14
•
Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Bonn
- 👤 Richard W Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:55
CPC Classifications
H; H03; H03F; H03F9/00; H03F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2027312A
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US2341526A
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US2388070A
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US2516563A
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US2700130A
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US2745056A
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US2747109A
Cited
US2909723A
Cited
US2710952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |