Patent US2537596A successfully refreshed from Google Patents.
US2537596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft speed measuring system designed to avoid propeller modulation effects
Assignee: RCA Corp
•
Filing: 1947-01-29
•
Granted: 1951-01-09
•
Expires: 1967-01-29
Abstract
No abstract record available.
Inventors
- 👤 Ciro C Martinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:20
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/58; G01S13/583
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2423023A
Cited
US2268587A
Cited
US2406316A
Cited
US2402464A
Cited
US2422074A
Cited
US2432939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |