Patent US846845A successfully refreshed from Google Patents.
US846845A
Expired / Lapsed
US
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Water-purifying apparatus.
Assignee: Wm B Scaife & Sons Co
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Filing: 1903-10-22
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Granted: 1907-03-12
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Expires: 1923-10-22
Abstract
No abstract record available.
Inventors
- 👤 John C W Greth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:08
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/529; C02F1/5281; C02F1/001; C02F1/004; C02F2001/007; C02F2301/00; C02F2301/02; C02F2301/028
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) | 1910-03-11 | 1910-09-10 | 1911-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-03-11 | 1914-09-10 | 1915-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-03-11 | 1918-09-10 | 1919-03-12 | $7700.00 | Window Closed / Lapsed |