US2820889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic radio jamming system
Assignee: Individual
•
Filing: 1953-02-26
•
Granted: 1958-01-21
•
Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Horace E Overacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
H; H04; H04K; H04K3/00; H04K3/40; H04K3/45; H04K3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2295629A
Cited
US2412991A
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US2418139A
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US2567261A
Cited
US2532589A
Cited
US2640150A
Cited
US2617985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |