Patent US2560935A successfully refreshed from Google Patents.
US2560935A
Expired / Lapsed
US
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Extraction of oleiferous materials
Assignee: MW Kellogg Co
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Filing: 1947-04-23
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Granted: 1951-07-17
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Expires: 1967-04-23
Abstract
No abstract record available.
Inventors
- 👤 John T Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:10
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0203; C; C11; C11B; C11B1/00; C11B1/10; C11B1/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849886A
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US2270674A
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US2152667A
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US2254245A
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US2281865A
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US2118454A
Cited
US2329889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |