Patent US2942119A successfully refreshed from Google Patents.
US2942119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric drift angle and ground speed meter
Assignee: RTX Corp
•
Filing: 1953-03-12
•
Granted: 1960-06-21
•
Expires: 1973-03-12
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L King
- 👤 James C Mathiesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/12; G01P; G01P3/00; G01P3/36; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1664454A
Cited
US1803834A
Cited
US1977762A
Cited
US2167484A
Cited
US2425541A
Cited
US2565213A
Cited
US2772479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |