US3199678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment unit
Assignee: Aquariums Inc
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Filing: 1961-08-07
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Granted: 1965-08-10
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Allan H Willinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN AQUARIUM WATER TREATMENT ASSEMBLY COMPRISING A HOUSING HAVING A WATER INLET, A WATER OUTLET CONDUIT FOR SAID HOUSING EXTENDING UPWARDLY THEREFROM TO A WATER DISCHARGE END THEREOF, AN AIR INLET CONDUIT PROVIDED ON SAID HOUSING TO SUPPLY AIR THERETO FOR CAUSING THE WATER THEREIN TO FLOW IP SAID WATER CONDUIT TO THE DISCHARGE END THEREOF, AND CARTRIDGE ADAPTED TO CONTAIN GRANULAR TREATMENT MATERIAL, SAID CARTRIDGE BEING PROVIDED ON SAID WATER CONDUIT, SAID CARTRIDGE HAVING AN INLET END CONTAINING APERTURES THEREIN AND COTERMINOUS WITH SAID WATER CONDUIT APERTURES THEREIN AND COTERMINOUS WITH SAID WATER UPWARDLY FROM SAID END THEREOF FOR THE FLOW OF AIR AND WATER UPWARDLY THROUGH SAID CARTRIDGE FROM THE DISCHARGE END OF SAID WATER CONDUIT, A TUBULAR COLLAR
Claim 2
Dependent Claim
121 words
AN AQUARIUM WATER TREATMENT ASSEMBLY COMPRISING A HOUSING HAVING A WATER INLET, A WATER OUTLET CONDUIT FOR SAID HOUSING EXTENDING UPWARDLY THEREFROM TO A WATER DISCHARGE END THEREOF, AN AIR INLET CONDUIT PROVIDED ON SAID HOUSING TO SUPPLY AIR THERETO FOR CAUSING THE WATER THEREIN TO FLOW IP SAID WATER CONDUIT TO THE DISCHARGE END THEREOF, AND CARTRIDGE ADAPTED TO CONTAIN GRANULAR TREATMENT MATERIAL, SAID CARTRIDGE BEING PROVIDED ON SAID WATER CONDUIT, SAID CARTRIDGE HAVING AN INLET END CONTAINING APERTURES THEREIN AND COTERMINOUS WITH SAID WATER CONDUIT APERTURES THEREIN AND COTERMINOUS WITH SAID WATER UPWARDLY FROM SAID END THEREOF FOR THE FLOW OF AIR AND WATER UPWARDLY THROUGH SAID CARTRIDGE FROM THE DISCHARGE END OF SAID WATER CONDUIT, A TUBULAR COLLAR
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |