US2978651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vernier tuning circuit for high frequency tuner
Assignee: TARZIAN SARKES
•
Filing: 1957-12-30
•
Granted: 1961-04-04
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 David G Canada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
H; H03; H03J; H03J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1918238A
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US2169257A
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US2145371A
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US2150562A
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US2159105A
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US2244023A
Cited
US2551228A
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US2591705A
Cited
US2620378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |