Patent US2616848A successfully refreshed from Google Patents.
US2616848A
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US
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Sewage treatment
Assignee: Individual
•
Filing: 1947-10-17
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Granted: 1952-11-04
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Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Griffith Llewellyn Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:17
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1242; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1642206A
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US1700723A
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US1717780A
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US1893623A
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US2008507A
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US2413838A
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US2348125A
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US2389357A
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US2427886A
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US2458163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |