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US3457374A
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US
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Recording method and apparatus for compensating third order distortions
Assignee: TELDEC Telefunken Decca Schallplatten GmbH
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Filing: 1965-07-16
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Granted: 1969-07-22
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Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hans-Joachim Klemp
- 👤 Horst Redlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:28
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/68; G11B3/70; H; H03; H03G; H03G5/00; H03G5/16
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |