US3213390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal oscillator with amplitude control loop
Assignee: Varo Inc
•
Filing: 1962-08-13
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Granted: 1965-10-19
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Winston O Faith
- 👤 Edwin T Sewall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:13
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B2200/00; H03B2200/006; H03B2200/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA453837A
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CA563672A
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US2568868A
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US2950446A
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US2950445A
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US3040272A
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US3067393A
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |