Patent US2802068A successfully refreshed from Google Patents.
US2802068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of impedance matching utilizing grounded-grid amplifier termination
Assignee: Individual
•
Filing: 1953-05-11
•
Granted: 1957-08-06
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Harwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/50; H03F3/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB529044A
Cited
US2356308A
Cited
US2398691A
Cited
US2563245A
Cited
US2586167A
Cited
US2571045A
Cited
US2452560A
Cited
US2728876A
Cited
US2605409A
Cited
US2647239A
Cited
US2586803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |