US3371347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction finding antenna system
Assignee: Control Data Corp
•
Filing: 1966-04-06
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Granted: 1968-02-27
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Expires: 1986-04-06
Abstract
No abstract record available.
Inventors
- 👤 Philip S Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:22
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; H; H01; H01Q; H01Q25/00; H01Q25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3246331A
Cited
US3246332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |