US2494611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiplugging control for motors
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1946-03-29
•
Granted: 1950-01-17
•
Expires: 1966-03-29
Abstract
No abstract record available.
Inventors
- 👤 Julius G Elwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:16
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/08; H02P3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1438649A
Cited
US1515232A
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US1785490A
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US1828564A
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US2057909A
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US2370047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |