US2232833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Band width control
Assignee: Telefunken AG
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Filing: 1939-11-14
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Granted: 1941-02-25
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Expires: 1959-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:49
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03J; H03J3/00; H03J3/02; H03J3/12; H03J3/14; H03J3/20; H03J3/24; H03J3/26; H03J5/00; H03J5/02; H03J5/04; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1638; H03H2210/00; H03H2210/01; H03H2210/015; H03H2210/02; H03H2210/025; H03H2210/026; H03H2210/03; H03H2210/033; H03H7/0138; H03H7/09; H03H7/17; H03H7/1741; H03H7/1775
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) | 1944-02-25 | 1944-08-26 | 1945-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-25 | 1948-08-26 | 1949-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-25 | 1952-08-26 | 1953-02-25 | $7700.00 | Window Closed / Lapsed |