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US3383632A
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Ferrimagnetic acoustic microwave delay line
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1965-10-11
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Granted: 1968-05-14
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Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Richard A Sparks
- 👤 Edgar L Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:07
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2850705A
Cited
US2869018A
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US2962676A
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US3023394A
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US3038131A
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US3244993A
Cited
US3249882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |