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Patent US5720574A successfully refreshed from Google Patents.
US678924A
Expired / Lapsed
US
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Apparatus for treating and utilizing sewage.
Assignee: Individual
•
Filing: 1901-02-16
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Granted: 1901-07-23
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Expires: 1921-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert Johnson Griffin Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/16; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8593; Y10T137/86268
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) | 1904-07-22 | 1905-01-21 | 1905-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-07-22 | 1909-01-21 | 1909-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-07-22 | 1913-01-21 | 1913-07-23 | $7700.00 | Window Closed / Lapsed |