US3372037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic materials
Assignee: International Business Machines Corp
•
Filing: 1965-06-30
•
Granted: 1968-03-05
•
Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Richard S Mcgrath
- 👤 Norman W Silcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
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)
US2827399A
Cited
US3268353A
Cited
US3282723A
Cited
US3234031A
Cited
US3178311A
Cited
US3255033A
Cited
US3265511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |