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US2441956A
Expired / Lapsed
US
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Radio guiding method and system
Assignee: STC PLC
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Filing: 1942-08-28
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Granted: 1948-05-25
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Expires: 1962-08-28
Abstract
No abstract record available.
Inventors
- 👤 Edmond M Deloraine
- 👤 Labin Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:47
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/91; G01S13/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |