US2410540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airway traffic control system
Assignee: SPX Technologies Inc
•
Filing: 1943-11-20
•
Granted: 1946-11-05
•
Expires: 1963-11-20
Abstract
No abstract record available.
Inventors
- 👤 Sedgwick N Wight
- 👤 Oscar S Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/22; G08G5/50; G08G5/56; G08G5/70; G08G5/72; G08G5/727
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-11-04 | 1950-05-06 | 1950-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-11-04 | 1954-05-06 | 1954-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-11-04 | 1958-05-06 | 1958-11-05 | $7700.00 | Window Closed / Lapsed |