US2451793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio landing apparatus
Assignee: General Electric Co
•
Filing: 1943-05-22
•
Granted: 1948-10-19
•
Expires: 1963-05-22
Abstract
No abstract record available.
Inventors
- 👤 Ernst F W Alexanderson
- 👤 Franklin G Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:05
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130913A
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US2151549A
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US2226860A
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US2226930A
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US2216707A
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US2262245A
Cited
US2307023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |