US2997178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water filter
Assignee: Individual
•
Filing: 1959-04-13
•
Granted: 1961-08-22
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Lorimer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:20
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/18; B01D24/183; C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; C02F2201/00; C02F2201/002; C02F2201/006
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |