US2848389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifier
Assignee: Individual
•
Filing: 1955-07-21
•
Granted: 1958-08-19
•
Expires: 1975-07-21
Abstract
No abstract record available.
Inventors
- 👤 Bjorksten Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:14
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0057; B01D5/006; B01D5/0066; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/14; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/138; Y02A20/142; Y02A20/20; Y02A20/208; Y02A20/212; Y10; Y10S; Y10S203/00; Y10S203/01; Y10S203/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2413101A
Cited
US2455835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |