Patent US2950083A successfully refreshed from Google Patents.
US2950083A
Expired / Lapsed
US
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Blade assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1954-07-23
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Granted: 1960-08-23
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Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 William A Compton
- 👤 Cummings Robert Edward
- 👤 Robert A Paetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:28
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282; F01D5/14; F01D5/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR375059A
Cited
US1035364A
Cited
GB502409A
Cited
GB526543A
Cited
FR861978A
Cited
US2484141A
Cited
US2630868A
Cited
US2767460A
Cited
US2650803A
Cited
US2830647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |