US2944254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring distance in radio homing systems
Assignee: ULTRA ELECTRIC Inc
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Filing: 1953-10-12
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Granted: 1960-07-05
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Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Kerr David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |