US2419561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal contact of which one element is mainly silicon
Assignee: The General Electric Company PLC
•
Filing: 1942-08-10
•
Granted: 1947-04-29
•
Expires: 1962-08-10
Abstract
No abstract record available.
Inventors
- 👤 Jones Douglas Enfield
- 👤 Ransley Charles Eric
- 👤 Ryde John Walter
- 👤 Williams Stanley Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10D; H10D64/00; H10D64/20; H10D64/23; H10P; H10P95/00; H10W72/00; H10W76/00; H10W76/60; Y; Y10; Y10S; Y10S420/00; Y10S420/903; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |