Patent US2480807A successfully refreshed from Google Patents.
US2480807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making impeller wheels
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-11-18
•
Granted: 1949-08-30
•
Expires: 1964-11-18
Abstract
No abstract record available.
Inventors
- 👤 Vlieg Charles B De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/16; B23C3/18; Y; Y10; Y10S; Y10S416/00; Y10S416/02; Y10T; Y10T29/00; Y10T29/37; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49325; Y10T29/49329; Y10T29/53; Y10T29/53657; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/30112; Y10T409/302968; Y10T409/303024; Y10T409/30308; Y10T409/303248
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US531817A
Cited
US627299A
Cited
US1346928A
Cited
US1422850A
Cited
US1515568A
Cited
US1863570A
Cited
US1959703A
Cited
US2116181A
Cited
US2326847A
Cited
US2392606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |