US2995254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water filter
Assignee: Individual
•
Filing: 1958-04-02
•
Granted: 1961-08-08
•
Expires: 1978-04-02
Abstract
No abstract record available.
Inventors
- 👤 Lena A Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:45
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898027A
Cited
US2083546A
Cited
US2082322A
Cited
US2076980A
Cited
US2114485A
Cited
US2156329A
Cited
US2530283A
Cited
US2607495A
Cited
US2547857A
Cited
US2792943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |