US2576608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flight information device
Assignee: Individual
•
Filing: 1949-02-28
•
Granted: 1951-11-27
•
Expires: 1969-02-28
Abstract
No abstract record available.
Inventors
- 👤 Cornelius M Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:00
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US528703A
Cited
US598509A
Cited
US1323763A
Cited
US896002A
Cited
US1366572A
Cited
US1412043A
Cited
US1662503A
Cited
US2117155A
Cited
GB586215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |