US2519233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft trainer
Assignee: AT&T Inc
•
Filing: 1944-06-30
•
Granted: 1950-08-15
•
Expires: 1964-06-30
Abstract
No abstract record available.
Inventors
- 👤 Richard C Davis
- 👤 Vincent F Bohman
- 👤 Charles E Germanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1865828A
Cited
US2124684A
Cited
GB396540A
Cited
US2099857A
Cited
US2153986A
Cited
GB548093A
Cited
US2336711A
Cited
US2366603A
Cited
US2341253A
Cited
US2385095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |