US3635816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying citrus plant effluent and raising worms and fish
Assignee: Individual
•
Filing: 1969-08-12
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Granted: 1972-01-18
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Expires: 1989-08-12
Abstract
Abstract Removable filter units consisting of environmental support material holding captured worms, or great numbers of monosex fish, either separately or in combination are in operative contact with a constantly changing body of liquid for removing organic pollutants while allowing periodic harvesting of mature worms and fish.
Inventors
- 👤 Gerald Golub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/32; C02F3/327; A; A01; A01K; A01K61/00; A01K61/10; A01K61/40; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y02A40/81; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1685301A
Cited
US2822329A
Cited
US2992986A
Cited
US2867055A
Cited
US3115864A
Cited
US3129692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |