Patent US20030171805A1 successfully refreshed from Google Patents.
US2059587A
Expired / Lapsed
US
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Oscillation generator
Assignee: Telefunken AG
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Filing: 1934-02-09
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Granted: 1936-11-03
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Expires: 1954-02-09
Abstract
No abstract record available.
Inventors
- 👤 Klotz Ernst
- 👤 Roosenstein Hans Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/10; H03C; H03C5/00; H03C5/02; H03C5/04; H03F; H03F3/00; H03F3/66; H03L; H03L5/00; H04; H04B; H04B1/00; H04B1/06; H04B1/16
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) | 1939-11-03 | 1940-05-04 | 1940-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-03 | 1944-05-04 | 1944-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-03 | 1948-05-04 | 1948-11-03 | $7700.00 | Window Closed / Lapsed |