Patent US2471489A successfully refreshed from Google Patents.
US2471489A
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Method of and apparatus for inspecting and assorting metal disks and the like
Assignee: Carnegie Illinois Steel Corp
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Filing: 1944-09-07
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Granted: 1949-05-31
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Expires: 1964-09-07
Abstract
No abstract record available.
Inventors
- 👤 Fred H Lucas
- 👤 Gerald E Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:43
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/06; B07C5/065; Y; Y10; Y10S; Y10S209/00; Y10S209/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US542679A
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US1325339A
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US1875423A
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US672208A
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US939109A
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US2269474A
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US2318520A
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US2346549A
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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) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |