US2915710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic coupled transistor oscillator
Assignee: Westinghouse Electric Corp
•
Filing: 1955-08-29
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Granted: 1959-12-01
•
Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Schiewe
- 👤 Chen Kan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:41
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3381
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB684626A
Cited
US2791739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |