Patent US2227099A successfully refreshed from Google Patents.
US2227099A
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US
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Method for settling and filtering sewage liquors
Assignee: Individual
•
Filing: 1936-04-23
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Granted: 1940-12-31
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Expires: 1956-04-23
Abstract
No abstract record available.
Inventors
- 👤 Edward B Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:29
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; B; B01; B01D; B01D21/00; B01D21/003; B01D21/0087; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2405; B01D21/2427; Y; Y02; Y02W; Y02W10/00; Y02W10/10
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) | 1943-12-31 | 1944-07-01 | 1944-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-31 | 1948-07-01 | 1948-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-31 | 1952-07-01 | 1952-12-31 | $7700.00 | Window Closed / Lapsed |