Patent US3530471A successfully refreshed from Google Patents.
US3530471A
Expired / Lapsed
US
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Automatic tracking radio equipments
Assignee: BAE Systems Electronics Ltd
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Filing: 1968-03-25
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Granted: 1970-09-22
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Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 John Richard Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:44
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/04; G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/28; G01S3/32; G01S3/325; G01S3/56; H01P; H01P1/00; H01P1/16; H01Q13/00; H01Q13/02; H01Q13/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3032759A
Cited
US3259899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |