US2948951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of point contact transistors
Assignee: Individual
•
Filing: 1957-11-19
•
Granted: 1960-08-16
•
Expires: 1977-11-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Dillaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:03
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10P; H10P10/00; H10P95/00; H10W72/00; H10W76/00; H10W76/60
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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |