Patent US2921444A successfully refreshed from Google Patents.
US2921444A
Expired / Lapsed
US
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Processes for removing salts and other soluble substances from sea water
Assignee: Individual
•
Filing: 1956-10-12
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Granted: 1960-01-19
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Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 Bump Wilson
- 👤 Weniger Willibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/22; F; F25; F25C; F25C1/00; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1020759A
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US1931347A
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US2389732A
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US2424663A
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US2617274A
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US2676469A
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US2666304A
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US2765921A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |