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US3054064A
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D.-c. output frequency discriminators using lag lead phase shift networks, sampling, and averaging circuits
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1958-02-12
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Granted: 1962-09-11
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Sherman Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/18; H03D3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2558758A
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US2448526A
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US2489313A
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US2530081A
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US2585532A
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US2888558A
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US2787776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |