Patent US2676212A successfully refreshed from Google Patents.
US2676212A
Expired / Lapsed
US
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Magnetic recording and reproducing
Assignee: Clevite Corp
•
Filing: 1948-08-20
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Granted: 1954-04-20
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Expires: 1968-08-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred L W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:00
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G11B15/02; G11B15/10; G11B15/16; G11B15/43; G11B15/44; G11B15/442; G11B15/60; G11B15/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1155776A
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US1560721A
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US2069721A
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NL45472C
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US2071192A
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US2266755A
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US2535486A
Cited
US2538893A
Cited
US2535498A
Cited
US2549834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |