Patent US2227491A successfully refreshed from Google Patents.
Patent US2293429A successfully refreshed from Google Patents.
US2293429A
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Short-wave aerial
Assignee: Telefunken AG
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Filing: 1941-05-16
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Granted: 1942-08-18
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Expires: 1961-05-16
Abstract
No abstract record available.
Inventors
- 👤 Feussner Hellmuth
- 👤 Kluge Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:09
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/085; C; C14; C14C; C14C1/00; C14C1/06; C14C1/065; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10W; H10W72/00; H10W72/20; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12326; Y10T428/12347
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) | 1945-08-17 | 1946-02-16 | 1946-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-17 | 1950-02-16 | 1950-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-17 | 1954-02-16 | 1954-08-18 | $7700.00 | Window Closed / Lapsed |