US2463094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane course indicating system
Assignee: SPX Technologies Inc
•
Filing: 1944-01-11
•
Granted: 1949-03-01
•
Expires: 1964-01-11
Abstract
No abstract record available.
Inventors
- 👤 Oscar S Field
- 👤 Sedgwick N Wight
- 👤 Samuel P Saint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1525783A
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US1885023A
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US2130913A
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US2151549A
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US2226860A
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US2366939A
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US2231929A
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US2201174A
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US2252083A
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US2279246A
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US2288102A
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US2396112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |