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US2693395A
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US
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Solids conveyance
Assignee: Union Oil Company of California
•
Filing: 1949-08-20
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Granted: 1954-11-02
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Expires: 1969-08-20
Abstract
No abstract record available.
Inventors
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:21
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0025; Y; Y10; Y10S; Y10S411/00; Y10S411/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1550992A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |