US2756338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable radio frequency interstage impedance
Assignee: STANDARD ELECTRONICS Corp
•
Filing: 1952-07-23
•
Granted: 1956-07-24
•
Expires: 1972-07-23
Abstract
No abstract record available.
Inventors
- 👤 Harry R Smith
- 👤 Allen R Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:35
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/42; H03F1/48; H03F1/50; H03H; H03H5/00; H03H5/02; H03J; H03J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1995301A
Cited
US2477581A
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US2468727A
Cited
US2543479A
Cited
US2532263A
Cited
US2631241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |