US2671619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding mechanism for magnetic recorders
Assignee: Umicore NV SA
•
Filing: 1952-10-13
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Granted: 1954-03-09
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Expires: 1972-10-13
Abstract
No abstract record available.
Inventors
- 👤 Fernand De Clerck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:43
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43; B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; G03; G03B; G03B1/00; G03B1/42; G03B1/54; G11B15/26; G11B15/34; G11B15/60; G11B15/66; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |