US2560003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core comprising leg, yoke, and corner laminations
Assignee: Allis Chalmers Corp
•
Filing: 1948-02-13
•
Granted: 1951-07-10
•
Expires: 1968-02-13
Abstract
No abstract record available.
Inventors
- 👤 William C Sealey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:45
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193678A
Cited
US2427571A
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US1805534A
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US2300964A
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US2393038A
Cited
US2407688A
Cited
US2431128A
Cited
US2483159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |