US3064181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic amplifier
Assignee: AT&T Inc
•
Filing: 1956-09-04
•
Granted: 1962-11-13
•
Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Chegwidden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2281593A
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US2230558A
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US2730574A
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US2758162A
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US2770769A
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GB742494A
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US2795652A
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US2843813A
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US2827608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |