Patent US2448038A successfully refreshed from Google Patents.
US2448038A
Expired / Lapsed
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Disintegrator and vortical classifier for solids
Assignee: Individual
•
Filing: 1942-08-01
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Granted: 1948-08-31
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Expires: 1962-08-01
Abstract
No abstract record available.
Inventors
- 👤 Henry G Lykken
- 👤 William H Lykken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:48
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2050231A
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US1996076A
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US2068599A
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US2125086A
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US2092307A
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US2294920A
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US2258901A
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US2274521A
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US2269716A
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US2359911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |