US3176246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for keeping the central frequency of a frequency modulated oscillator constant
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1961-03-29
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Granted: 1965-03-30
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Expires: 1981-03-29
Abstract
No abstract record available.
Inventors
- 👤 Boiten Egbert Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:17
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/02; H03C3/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2322588A
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US2470892A
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US2408858A
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US2550519A
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US2672589A
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US2577795A
Cited
US3008095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |