US2695930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency transistor circuit
Assignee: AT&T Inc
•
Filing: 1952-06-19
•
Granted: 1954-11-30
•
Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert L Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:06
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/14; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03C; H03C1/00; H03C1/36; H03C5/00; H03D; H03D7/00; H03D7/12; H03F1/00; H03F1/42; H03F1/48; H10; H10D; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/145
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2563503A
Cited
US2569347A
Cited
US2560579A
Cited
US2502479A
Cited
US2560594A
Cited
US2600500A
Cited
US2553491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |