US2952845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument approach and landing system for aircraft
Assignee: Raytheon Co
•
Filing: 1955-09-16
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Granted: 1960-09-13
•
Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Nicholas A Begovich
- 👤 Epstein Herman
- 👤 Richard H Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:05
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/54; G01S1/58; G01S1/60; G01S13/00; G01S13/88; G01S13/91; G01S13/913; H; H01; H01Q; H01Q3/00; H01Q3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1865826A
Cited
US1802688A
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US2205560A
Cited
US2294882A
Cited
US2365949A
Cited
US2378242A
Cited
US2654084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |