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US2155652A
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Arrangement for coupling high frequency circuits
Assignee: Telefunken AG
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Filing: 1932-09-20
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Granted: 1939-04-25
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Expires: 1952-09-20
Abstract
No abstract record available.
Inventors
- 👤 Gothe Albrecht
- 👤 Hans O Roosenstein
- 👤 Walter Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:09
CPC Classifications
C; C10; C10B; C10B33/00; C10B33/14; C10B39/00; C10B39/04; H; H01; H01P; H01P5/00; H01P5/08; H01P5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-04-24 | 1942-10-24 | 1943-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-24 | 1946-10-24 | 1947-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-24 | 1950-10-24 | 1951-04-25 | $7700.00 | Window Closed / Lapsed |