US3480522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making magnetic thin film device
Assignee: International Business Machines Corp
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Filing: 1966-08-18
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Granted: 1969-11-25
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 James M Brownlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:52
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/10; B; B82; B82Y; B82Y25/00; B82Y40/00; C25D5/18; H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/12; H01F10/14; H01F41/00; H01F41/14; H01F41/24; H01F41/26; H01F41/30; H01F41/302; H01F41/309; Y; Y10; Y10S; Y10S205/00; Y10S205/922; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12632; Y10T428/12771; Y10T428/12861; Y10T428/12944
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |