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US2840299A
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Axial flow compressor rotor
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1952-09-22
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Granted: 1958-06-24
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Expires: 1972-09-22
Abstract
No abstract record available.
Inventors
- 👤 Robert A Paetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:38
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D11/00; F01D11/005; F01D11/006; F01D11/008; F01D5/30; F01D5/3053; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49321
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |