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Patent US2619293A successfully refreshed from Google Patents.
US2619293A
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Intensive mixing apparatus
Assignee: Simpson Herbert Corp
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Filing: 1947-02-27
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Granted: 1952-11-25
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Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:57
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US789983A
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US1005738A
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US1910028A
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US2246991A
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US2303319A
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US2461176A
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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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |