Patent US2965722A successfully refreshed from Google Patents.
US2965722A
Expired / Lapsed
US
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Magnetic reproducing apparatus
Assignee: Dictaphone Corp
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Filing: 1957-02-04
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Granted: 1960-12-20
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Marion P Shorb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:05
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2351009A
Cited
US2604550A
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US2531141A
Cited
US2694108A
Cited
US2589035A
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FR1044538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |