US3020402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic signal finder
Assignee: Lockheed Martin Tactical Systems Inc
•
Filing: 1955-08-19
•
Granted: 1962-02-06
•
Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 Brodsky Elihu
- 👤 Harold A Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2422334A
Cited
US2428058A
Cited
US2499584A
Cited
US2500347A
Cited
US2550430A
Cited
US2491029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |