US2603779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio guidance system
Assignee: Unisys Corp
•
Filing: 1945-12-27
•
Granted: 1952-07-15
•
Expires: 1965-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas M Ferrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:27
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB441370A
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FR809447A
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US2271534A
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US2290974A
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US2275298A
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US2226366A
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FR862819A
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FR857582A
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US2404810A
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US2424560A
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US2410117A
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US2431317A
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US2418284A
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FR984834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |