US2498666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifier unit
Assignee: STC PLC
•
Filing: 1946-10-10
•
Granted: 1950-02-28
•
Expires: 1966-10-10
Abstract
No abstract record available.
Inventors
- 👤 Charles A Escoffery
- 👤 Walter H Hawk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:38
CPC Classifications
H; H10; H10W; H10W90/00; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; H10D; H10D99/00; H10W76/00; H10W76/10; H10W76/12; H10W76/161
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) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |