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Patent US797661A successfully refreshed from Google Patents.
US797661A
Expired / Lapsed
US
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Apparatus for purifying gases of combustion.
Assignee: Individual
•
Filing: 1903-12-11
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Granted: 1905-08-22
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Expires: 1923-12-11
Abstract
No abstract record available.
Inventors
- 👤 William Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1294; Y; Y10; Y10S; Y10S261/00; Y10S261/09
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) | 1908-08-21 | 1909-02-20 | 1909-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-08-21 | 1913-02-20 | 1913-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-08-21 | 1917-02-20 | 1917-08-22 | $7700.00 | Window Closed / Lapsed |