US3048835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transponder devices for use in secondary radar systems
Assignee: AC Cossor Ltd
•
Filing: 1958-01-20
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Granted: 1962-08-07
•
Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Perkins Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:00
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/762; G01S13/78; G01S13/781; G01S13/784
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |