Patent US2464594A successfully refreshed from Google Patents.
US2464594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase and amplitude control circuit for wide band amplifiers
Assignee: AT&T Inc
•
Filing: 1946-04-06
•
Granted: 1949-03-15
•
Expires: 1966-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr John J Mahoney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:17
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/32; H03G; H03G3/00; H03G3/02; H03G3/04; H03G3/06; H03H11/16; H03H11/18; H03K; H03K5/00; H03K5/01; H03K5/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |