Patent US3433359A successfully refreshed from Google Patents.
US3433359A
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Installations for the purification of liquids
Assignee: Purac AB
•
Filing: 1968-01-18
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Granted: 1969-03-18
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Expires: 1988-01-18
Abstract
No abstract record available.
Inventors
- 👤 Eric Gustaf Lundin
- 👤 Ernst Arne Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:33
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/1431; B01; B01D; B01D24/00; B01D24/02; B01D24/20; B01D24/22; B01D24/38; B01D24/40; B01D24/42; B01D24/46; B01D24/4631; B01D24/48; B01D24/4869; B01D36/00; B03D1/02; B03D1/028; B03D1/1412; B03D1/1443; B03D1/1462; B03D1/1475; B03D1/1487; C; C02; C02F; C02F1/00; C02F1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |