US2558853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for inserting corrections in a sequence of recorded intelligence
Assignee: Autophon AG
•
Filing: 1948-01-16
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Granted: 1951-07-03
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Expires: 1968-01-16
Abstract
No abstract record available.
Inventors
- 👤 Kappeler Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:41
CPC Classifications
G; G11; G11B; G11B31/00; G11B15/00; G11B15/18; G11B27/00; G11B27/02; G11B27/022; G11B27/024; G11B27/029; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3009; G11B5/00; G11B2220/00; G11B2220/90
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |