US2485599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core and clamp
Assignee: STC PLC
•
Filing: 1945-04-09
•
Granted: 1949-10-25
•
Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Halvorsen Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:49
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/26; H01F27/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US708132A
Cited
US1539928A
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US1579955A
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GB388803A
Cited
US1974588A
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US2068320A
Cited
US2229373A
Cited
US2372067A
Cited
US2261323A
Cited
US2317844A
Cited
US2367591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |