US2498702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical magnetic core
Assignee: Individual
•
Filing: 1944-09-15
•
Granted: 1950-02-28
•
Expires: 1964-09-15
Abstract
No abstract record available.
Inventors
- 👤 Nahman Gustave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:29
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078; Y10T29/53; Y10T29/53652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1543001A
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DE460275C
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GB267619A
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US1750149A
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US2107973A
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GB482771A
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US2246239A
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US2314912A
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US2324115A
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US2372529A
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US2411374A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |