Patent US2481398A successfully refreshed from Google Patents.
US2481398A
Expired / Lapsed
US
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Selector system for magnetic wire reproducers
Assignee: IIT Research Institute
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Filing: 1945-06-29
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Granted: 1949-09-06
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Expires: 1965-06-29
Abstract
No abstract record available.
Inventors
- 👤 Marion S Danisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/584; G11B25/00; G11B25/08; G11B27/00; G11B27/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US876006A
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US897765A
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US1825911A
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US1852727A
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US2167459A
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US2275961A
Cited
US2364556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |