US2711593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airfield lighting simulator
Assignee: Individual
•
Filing: 1950-04-20
•
Granted: 1955-06-28
•
Expires: 1970-04-20
Abstract
No abstract record available.
Inventors
- 👤 Lewis Amos Leo
- 👤 Breckenridge Francis Chapin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/305
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2493770A
Cited
US1393456A
Cited
US1947982A
Cited
US2164412A
Cited
US2442297A
Cited
US2452039A
Cited
US2313480A
Cited
GB548093A
Cited
US2494508A
Cited
US2485301A
Cited
US2326764A
Cited
US2366603A
Cited
US2312370A
Cited
US2307840A
Cited
US2334351A
Cited
US2392781A
Cited
US2453436A
Cited
US2385095A
Cited
US2394062A
Cited
US2385291A
Cited
US2485435A
Cited
US2475314A
Cited
GB575688A
Cited
US2410277A
Cited
US2413633A
Cited
US2492969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |