Patent US2979615A successfully refreshed from Google Patents.
US2979615A
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US
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Apparatus for tuning a radio frequency
Assignee: LIBERTY Manufacturing CORP
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Filing: 1956-11-06
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Granted: 1961-04-11
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Expires: 1976-11-06
Abstract
No abstract record available.
Inventors
- 👤 Mogens W Bang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:28
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/06
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |