US2399289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying liquids
Assignee: AQUA ELECTRIC CORP Ltd
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Filing: 1943-10-26
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Granted: 1946-04-30
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Expires: 1963-10-26
Abstract
No abstract record available.
Inventors
- 👤 Negus Frank Gaies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/463; C02F1/46104; C02F1/46109; C02F2001/46119; C02F2001/46123; C02F2001/46152; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-04-29 | 1949-10-29 | 1950-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-29 | 1953-10-29 | 1954-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-29 | 1957-10-29 | 1958-04-30 | $7700.00 | Window Closed / Lapsed |