Patent US2992698A successfully refreshed from Google Patents.
US2992698A
Expired / Lapsed
US
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Combination separator and dehydrator
Assignee: Individual
•
Filing: 1958-03-07
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Granted: 1961-07-18
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 John L Pearson
- 👤 John E Rall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:29
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US243285A
Cited
US1319574A
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US2765868A
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US1235998A
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US1443435A
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US1871546A
Cited
US2026935A
Cited
US2116537A
Cited
US2701624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |