US2658950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reproducer for magnetically recorded signals
Assignee: RCA Corp
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Filing: 1948-08-31
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Granted: 1953-11-10
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Expires: 1968-08-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Canfora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/35; H; H04; H04L; H04L13/00; H04L13/02; H04L13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |