US2940172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angle setting device
Assignee: Northrop Grumman Corp
•
Filing: 1949-04-18
•
Granted: 1960-06-14
•
Expires: 1969-04-18
Abstract
No abstract record available.
Inventors
- 👤 Frank C Bell
- 👤 Bruce E Dixson
- 👤 Harvey L Ellsworth
- 👤 Richard D James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/02; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1502; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18648; Y10T74/21; Y10T74/2101; Y10T74/2102
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |