Patent US3398913A successfully refreshed from Google Patents.
US3398913A
Expired / Lapsed
US
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Vacuum controlled jet transport apparatus for magnetic tape
Assignee: International Business Machines Corp
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Filing: 1966-07-15
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Granted: 1968-08-27
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Expires: 1986-07-15
Abstract
No abstract record available.
Inventors
- 👤 Anthony W Orlando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:55
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/36; B65H5/38; B65H5/22; G; G11; G11B; G11B15/00; G11B15/18; G11B15/38
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |