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Patent US2944786A successfully refreshed from Google Patents.
US2944786A
Expired / Lapsed
US
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Super and subsonic vaneless nozzle
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1953-10-15
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Granted: 1960-07-12
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Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 Pierce T Angell
- 👤 Robert J Anderson
- 👤 Malcolm M Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:47
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/026; F01D1/00; F01D1/02; F01D1/06; F01D1/08; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1445310A
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CA474916A
Cited
US1386548A
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DE438590C
Cited
US1548341A
Cited
US2613609A
Cited
US2652191A
Cited
AT168357B
Cited
US2715814A
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 |