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US3430768A
Expired / Lapsed
US
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Separation process
Assignee: Universal Oil Products Co
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Filing: 1966-12-30
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Granted: 1969-03-04
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 John H Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:00
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US689366A
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US1272850A
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US1481901A
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US2047229A
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US2307078A
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US2413430A
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US3080057A
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US3350851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |