Patent US2941741A successfully refreshed from Google Patents.
US2941741A
Expired / Lapsed
US
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Tape cartridge and tape loading mechanism
Assignee: International Business Machines Corp
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Filing: 1958-06-30
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Granted: 1960-06-21
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Malvin S Bilsback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:01
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B15/00; G11B15/18; G11B15/1883; G11B15/56; G11B15/58; G11B15/60; G11B15/66; G11B15/665; G11B15/6651; G11B15/675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1520444A
Cited
US1666652A
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US1735183A
Cited
US2499895A
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US2584733A
Cited
US2612565A
Cited
US2702834A
Cited
US2778880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |