Patent US3490209A successfully refreshed from Google Patents.
US3490209A
Expired / Lapsed
US
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Liquid separator
Assignee: United Aircraft Products Inc
•
Filing: 1968-02-20
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Granted: 1970-01-20
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Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph Fernandes
- 👤 Frank B Lane
- 👤 Raymond S De Groote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:22
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2087789A
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US2232913A
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GB555908A
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US2659450A
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US2773598A
Cited
US2709501A
Cited
FR1102737A
Cited
US2970669A
Cited
US2961064A
Cited
US3216182A
Cited
US3372532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |