Patent US2961612A successfully refreshed from Google Patents.
Patent US349444A successfully refreshed from Google Patents.
US3489014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital,analog vortex speed sensor
Assignee: United States Department of the Air Force
•
Filing: 1967-03-03
•
Granted: 1970-01-13
•
Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Przybylko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/26; G01P3/266; G01C; G01C19/00; G01C19/02; G01C19/42; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/212; Y10T137/2125; Y10T137/2147; Y10T137/2158
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2527353A
Cited
US2857150A
Cited
US2939401A
Cited
US3292648A
Cited
US3339571A
Cited
US3409032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |