Patent US2585973A successfully refreshed from Google Patents.
US2585973A
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Milling machine and method for impeller wheel manufacture
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1948-04-01
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Granted: 1952-02-19
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Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Henry C Stieglitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:03
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/16; B23C3/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/303304
Claims Analysis
Total Claims: 0
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US2215171A
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US2386880A
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US2429324A
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US2480807A
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |