US2802946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh-frequency converter
Assignee: TRANS TEL CORP
•
Filing: 1953-06-08
•
Granted: 1957-08-13
•
Expires: 1973-06-08
Abstract
No abstract record available.
Inventors
- 👤 Feigl Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:33
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2078909A
Cited
US2385131A
Cited
US2461832A
Cited
US2395520A
Cited
US2480187A
Cited
US2543891A
Cited
US2620378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |