US3042997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making magnetic data storage devices
Assignee: NCR Voyix Corp
•
Filing: 1957-11-18
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Granted: 1962-07-10
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Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 John R Anderson
- 👤 Richard M Clinchens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:25
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/06; G; G11; G11C; G11C11/00; G11C11/02; G11C11/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US145285A
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US2680710A
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US2724103A
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US2977790A
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US2911317A
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US2977791A
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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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |