Patent US5842984A successfully refreshed from Google Patents.
Patent US820482A successfully refreshed from Google Patents.
US820482A
Expired / Lapsed
US
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Apparatus for treating liquids.
Assignee: AMERICUS ELECTROHERMATIC Co
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Filing: 1904-05-24
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Granted: 1906-05-15
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Expires: 1924-05-24
Abstract
No abstract record available.
Inventors
- 👤 Leon Dion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:15
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; B; B01; B01D; B01D61/00; B01D61/42; B01D61/56
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) | 1909-05-14 | 1909-11-13 | 1910-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-05-14 | 1913-11-13 | 1914-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-05-14 | 1917-11-13 | 1918-05-15 | $7700.00 | Window Closed / Lapsed |