US2606250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency discriminator network
Assignee: RCA Corp
•
Filing: 1947-03-29
•
Granted: 1952-08-05
•
Expires: 1967-03-29
Abstract
No abstract record available.
Inventors
- 👤 Mackey Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:13
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751996A
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US2210303A
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US2141254A
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US2140770A
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FR843501A
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US2157170A
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US2204954A
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US2279506A
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US2309481A
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US2400857A
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US2453529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |