US646108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying water.
Assignee: C J BLAIR
•
Filing: 1899-06-05
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Granted: 1900-03-27
•
Expires: 1919-06-05
Abstract
No abstract record available.
Inventors
- 👤 Cass L Kennicott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:27
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
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) | 1903-03-27 | 1903-09-26 | 1904-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-03-27 | 1907-09-26 | 1908-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-03-27 | 1911-09-26 | 1912-03-27 | $7700.00 | Window Closed / Lapsed |