Patent US2982527A successfully refreshed from Google Patents.
US2982527A
Expired / Lapsed
US
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Gas-liquid contact apparatus
Assignee: Gulf Oil Corp
•
Filing: 1956-12-31
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Granted: 1961-05-02
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Aksel C Eld
- 👤 William R Lehrian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:45
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1057576A
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US1453735A
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AT92960B
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US1808276A
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US2175360A
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US2428889A
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US2525064A
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US2658737A
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US2772080A
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US2871003A
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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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |