US2813326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistors
Assignee: Individual
•
Filing: 1953-08-20
•
Granted: 1957-11-19
•
Expires: 1973-08-20
Abstract
No abstract record available.
Inventors
- 👤 Liebowitz Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:58
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/04; B21C37/042; B21C3/00; B21C3/02; B21C3/04; H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D62/00; H10D62/10; H10D99/00; H10P; H10P52/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2666814A
Cited
US2672528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |