Patent US2582302A successfully refreshed from Google Patents.
US2582302A
Expired / Lapsed
US
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Material separating apparatus
Assignee: Deister Concentrator Co Inc
•
Filing: 1947-06-19
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Granted: 1952-01-15
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Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 Don A Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:28
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1105912A
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US780031A
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US1291616A
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US2242562A
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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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |