US2909742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine wound magnetic core
Assignee: General Electric Co
•
Filing: 1953-09-01
•
Granted: 1959-10-20
•
Expires: 1973-09-01
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Lamberton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:57
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB653437A
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GB731500A
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |