Patent US4622611A successfully refreshed from Google Patents.
US3033480A
Expired / Lapsed
US
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Magnetic tape recorder and reproducer
Assignee: Siegler Corp
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Filing: 1960-03-10
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Granted: 1962-05-08
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Expires: 1980-03-10
Abstract
No abstract record available.
Inventors
- 👤 Parzen Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:58
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/18; G11B15/26; G11B15/28; G11B15/32; G11B25/00; G11B25/06
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |