US2962586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency mixer stage
Assignee: Telefunken AG
•
Filing: 1957-12-18
•
Granted: 1960-11-29
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Robert M Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2107393A
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US2277638A
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US2444854A
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US2603723A
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US2804544A
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US2819391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |