Patent US2983457A successfully refreshed from Google Patents.
US2983457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape recorder
Assignee: TORO IND Inc
•
Filing: 1956-12-18
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Granted: 1961-05-09
•
Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Toro John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:18
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32; G11B5/00; G11B2005/0002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US257050A
Cited
US580806A
Cited
US1828569A
Cited
US1300236A
Cited
US1256690A
Cited
US1462487A
Cited
US1927615A
Cited
US2116735A
Cited
US2153666A
Cited
US2161341A
Cited
US2574218A
Cited
US2604271A
Cited
US2639333A
Cited
US2531702A
Cited
US2686845A
Cited
US2743878A
Cited
US2652204A
Cited
US2555671A
Cited
US2705639A
Cited
US2685415A
Cited
US2761017A
Cited
US2700904A
Cited
US2775407A
Cited
US2806658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |