US2428706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preflight training plane
Assignee: EDWARD JOHN RANDANT JR
•
Filing: 1944-07-05
•
Granted: 1947-10-07
•
Expires: 1964-07-05
Abstract
No abstract record available.
Inventors
- 👤 Hardell Lawrence Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:45
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876418A
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US1939047A
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US1937241A
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US1825462A
Cited
US1912721A
Cited
US1928519A
Cited
US2061953A
Cited
US2263359A
Cited
US2336711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |