US677641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of water filtration and purification.
Assignee: Individual
•
Filing: 1900-05-02
•
Granted: 1901-07-02
•
Expires: 1920-05-02
Abstract
No abstract record available.
Inventors
- 👤 Miles L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:49
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/20; B01D24/205; B01D24/48; B01D24/4807; B01D24/4815; B01D2201/00; B01D2201/08; B01D2201/087
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) | 1904-07-01 | 1904-12-31 | 1905-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-07-01 | 1908-12-31 | 1909-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-07-01 | 1912-12-31 | 1913-07-02 | $7700.00 | Window Closed / Lapsed |