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US2852680A
Expired / Lapsed
US
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Negative-impedance transistor oscillator
Assignee: TDK Micronas GmbH
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Filing: 1956-03-28
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Granted: 1958-09-16
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Expires: 1976-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur J Radcliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:01
CPC Classifications
H; H03; H03L; H03L5/00; H03B; H03B7/00; H03B7/02; H03B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2726370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |