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US2427872A
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Tapered magnetic core
Assignee: RCA Corp
•
Filing: 1943-03-24
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Granted: 1947-09-23
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Expires: 1963-03-24
Abstract
No abstract record available.
Inventors
- 👤 William E Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06; H01F21/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141890A
Cited
US2245373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |