Patent US2576504A successfully refreshed from Google Patents.
US2576504A
Expired / Lapsed
US
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Horizontal transport of solids
Assignee: Standard Oil Co
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Filing: 1949-06-25
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Granted: 1951-11-27
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Expires: 1969-06-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick E England
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:34
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/36; B01J8/0015; B01J8/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329490A
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US544970A
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DE491075C
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US857096A
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US808752A
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US1058431A
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US1707335A
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US2464812A
Cited
US2478326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |