US2906890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuits employing transistors
Assignee: International Standard Electric Corp
•
Filing: 1955-03-17
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Granted: 1959-09-29
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Expires: 1975-03-17
Abstract
No abstract record available.
Inventors
- 👤 Odell Alexander Douglas
- 👤 Turner George Ian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:32
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; G; G11; G11C; G11C19/00; G11C19/28; H01; H01B; H01B3/00; H01B3/18; H01B3/48; H01B3/50; H02M3/3385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |