US3538600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of deburring magnetic cores
Assignee: Core Memories Ltd
•
Filing: 1968-07-10
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Granted: 1970-11-10
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Expires: 1988-07-10
Abstract
No abstract record available.
Inventors
- 👤 John Farrell
- 👤 Seamus Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/16; H01F41/02; H01F41/0206; H01F41/0246; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49075; Y10T29/49076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB785328A
Cited
US3110675A
Cited
US3116106A
Cited
US3247572A
Cited
US3246060A
Cited
US3422173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |