US2898557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized voltage controlled oscillator
Assignee: North American Aviation Corp
•
Filing: 1956-08-08
•
Granted: 1959-08-04
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Expires: 1976-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert K Dahlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:00
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/501; H03K7/00; H03K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2153217A
Cited
US2557770A
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US2679594A
Cited
US2726329A
Cited
US2767378A
Cited
US2663800A
Cited
US2780767A
Cited
US2797327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |