US2543067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator converter
Assignee: Farnsworth Research Corp
•
Filing: 1944-03-18
•
Granted: 1951-02-27
•
Expires: 1964-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert W Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:30
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/06; H03D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1113149A
Cited
US1313093A
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US1469889A
Cited
US1518633A
Cited
US1940519A
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US2053414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |