US2911644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler radio antenna
Assignee: General Precision Laboratory Inc
•
Filing: 1956-11-30
•
Granted: 1959-11-03
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Stavis Gus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:41
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/004; G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408435A
Cited
US2834014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |