US798964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying water.
Assignee: American Water Purification Inc
•
Filing: 1902-03-14
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Granted: 1905-09-05
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Expires: 1922-03-14
Abstract
No abstract record available.
Inventors
- 👤 Horace F Hodges
- 👤 Joseph Kuen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934
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) | 1908-09-04 | 1909-03-06 | 1909-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-09-04 | 1913-03-06 | 1913-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-09-04 | 1917-03-06 | 1917-09-05 | $7700.00 | Window Closed / Lapsed |