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US2981865A
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Transistorized oscillatory system
Assignee: TRANSITRONICS Ltd
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Filing: 1959-06-08
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Granted: 1961-04-25
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Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Erwin A Fernbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:06
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; F; F02; F02P; F02P3/00; F02P3/01; F02P3/02; F02P3/04; F02P3/055; F02P3/0552; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1589489A
Cited
US1968930A
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US2475995A
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US2347286A
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US2878298A
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US2780767A
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US2816230A
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US2849615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |