US3448044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-foam fractionation
Assignee: DONALD E GARRETT
•
Filing: 1968-02-15
•
Granted: 1969-06-03
•
Expires: 1988-02-15
Abstract
No abstract record available.
Inventors
- 👤 Donald E Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:36
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2765919A
Cited
US2793185A
Cited
GB797158A
Cited
GB955321A
Cited
FR1327422A
Cited
US3175687A
Cited
US3352420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |