US2945218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring system including a magnetic amplifier
Assignee: Elsag Bailey Inc
•
Filing: 1955-05-19
•
Granted: 1960-07-12
•
Expires: 1975-05-19
Abstract
No abstract record available.
Inventors
- 👤 George R Markow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:11
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2456; H03; H03F; H03F9/00; H03F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1940335A
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US2557224A
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US2632885A
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US2719885A
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US2777098A
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US2700759A
Cited
US2650342A
Cited
US2725519A
Cited
US2823348A
Cited
US2807006A
Cited
US2825894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |