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US2968037A
Expired / Lapsed
US
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High frequency receiving antenna
Assignee: Individual
•
Filing: 1957-04-08
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Granted: 1961-01-10
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:16
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1968099A
Cited
US2169358A
Cited
US2404093A
Cited
US2712603A
Cited
US2872569A
Cited
US2828413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |