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US2415977A
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Superheterodyne converter
Assignee: RCA Corp
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Filing: 1943-03-08
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Granted: 1947-02-18
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Expires: 1963-03-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:06
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H03D; H03D9/00; H03D9/06; H03D9/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2200023A
Cited
US2277638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |