US3370979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic films
Assignee: International Business Machines Corp
•
Filing: 1964-06-05
•
Granted: 1968-02-27
•
Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Schmeckenbecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:13
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; C; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1715647A
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US2827399A
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US3015807A
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US3125745A
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US3268353A
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US3278914A
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US3252152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |