US2472938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Point-contact rectifier
Assignee: The General Electric Company PLC
•
Filing: 1945-03-01
•
Granted: 1949-06-14
•
Expires: 1965-03-01
Abstract
No abstract record available.
Inventors
- 👤 Brittain Francis Hugh
- 👤 Ransley Charles Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:11
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10P; H10P95/00; H10W72/00; H10W76/01; H10W76/05; H10W76/42; H10W76/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1708572A
Cited
US1611653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |