Patent US2708554A successfully refreshed from Google Patents.
US2708554A
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Tape drive and recording apparatus
Assignee: Unisys Corp
•
Filing: 1950-07-29
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Granted: 1955-05-17
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Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Welsh Herbert Frazer
- 👤 Edmund D Schreiner
- 👤 Mock Leon Robert
- 👤 Jr John Presper Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:51
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G06; G06K; G06K13/00; G06K13/18; G06K13/26; G06K13/28; G11B15/02; G11B15/026; G11B15/18; G11B15/22; G11B15/43; H; H04; H04L; H04L13/00; H04L13/02; H04L13/06
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |