US2660930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming predetermined irregular surfaces
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1947-05-15
•
Granted: 1953-12-01
•
Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Vlieg Charles B De
- 👤 Vlieg Howard R De
- 👤 Vlieg Charles R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/16; B23C3/18; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/302968; Y10T409/303024; Y10T409/30308; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088
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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |