US3197749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device and apparatus and procedure for making the same
Assignee: NCR Voyix Corp
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Filing: 1961-09-29
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Granted: 1965-07-27
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Richard M Clinehens
- 👤 Donal A Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:27
CPC Classifications
H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/12; H01F10/14; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A BISTABLE MAGNETIC DEVICE COMPRISING: A BASE MEMBER OF A NON-MAGNETIC MATERIAL, SAID BASE MEMBER HAVING A CYLINDRICAL SURFACE; AND A THIN LAYER OF MAGNETIC MATERIAL UNIFORMLY DISPOSED OVER SAID SURFACE, SAID MAGNETIC MATERIAL BEING COMPOSED OF AN IRON-NICKEL ALLOY, SUBSTANTIALLY OF 97% IRON, BY WEIGHT, AND THE REMAINDER BEING NICKEL.
Claim 2
Dependent Claim
51 words
A BISTABLE MAGNETIC DEVICE COMPRISING: A BASE MEMBER OF A NON-MAGNETIC MATERIAL, SAID BASE MEMBER HAVING A CYLINDRICAL SURFACE; AND A THIN LAYER OF MAGNETIC MATERIAL UNIFORMLY DISPOSED OVER SAID SURFACE, SAID MAGNETIC MATERIAL BEING COMPOSED OF AN IRON-NICKEL ALLOY, SUBSTANTIALLY OF 97% IRON, BY WEIGHT, AND THE REMAINDER BEING NICKEL.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |