Patent US2511104A successfully refreshed from Google Patents.
US2511104A
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Apparatus for indicating differential speeds of rotating elements
Assignee: Carnegie Illinois Steel Corp
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Filing: 1947-06-26
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Granted: 1950-06-13
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Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Forrest R Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/02; G01P3/04; G01P3/06; Y; Y10; Y10T; Y10T74/00; Y10T74/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US864379A
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US955081A
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US1273932A
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US2109482A
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US1983093A
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US2132911A
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GB458953A
Cited
US2158137A
Cited
US2375422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |