Matches 1 - 26 out of 26
Match Document Document Title
6143187 Fluidized bed filter for an aquarium  
Improved fluidized bed filters are described and claimed. The filters are exemplified for use in aquarium systems. A preferred embodiment of the filter of the subject invention comprises a cylinder...
5011600 Water filtration system for aquariums  
A water filtration system includes an auxiliary filter assembly having a single inlet connected to the water lift tube of an undergravel filter and an outlet connected to a submersible electric...
4894151 Filter cartridge for an undergravel aquarium filter  
An undergravel filter of an aquarium tank served by a power head to suck water from a chamber located beneath the undergravel filter to circulate this water into the tank. A riser tube connects the...
4802980 Aquarium filter  
A dual action aquarium filter has a slotted base for placement in the bottom of an aquarium. The base is covered with gravel, allowing water to be filtered through the gravel and into the interior...
4728420 Air and water flow system for aquarium  
Aquarium with a multiple conduit fixture through one wall, the fixture including an air inlet connected to a plurality of air outlets and a water conduit, each of the air outlets and the water...
4481905 Aquarium with improved aerator and purifier  
An aquarium tank has positioned internally on its bottom a combined aerating and purifying cartridge containing suitable filtering media. An air supply is introduced in a dual direction to the...
4385989 Filter assembly and cartridge therefor  
A novel filter assembly (10) and filter cartridge (12) therefor for use in an under-gravel filtration system in an aquarium tank (24). The filter assembly (10) includes an airlift tube (14), a...
4206054 Pyramidic aquarium filter-aerator  
An aquarium filter-aerator device having a substantially pyramidic construction with water inlets on all sides that operates on an air-induced water flow principle anywhere along the bottom of an...
4186093 Bottom aquarium filter  
A bottom aquarium filter for an aquarium tank which includes a container having an inlet compartment which can receive contaminated water from the tank, and a filtration compartment which converts...
4072612 Aerator for bodies of water  
An aerator for bodies of water comprises a submerged water intake with a filter on it, that leads to the axial inlet of a centrifugal pump of the type that can handle substantial quantities of air....
4035298 Aquarium filter  
An elongated air discharge tube extends along the bottom of a chamber in an elongated housing. The housing is placed on the bottom of an aquarium tank along a side wall thereof. The tube includes a...
3924570 Aquarium scenic filter in fish tank  
An improved filter unit for installation in a fish tank; the filter including a perforated hollow base that forms a floor for the tank and from which there protrudes upwardly a container of...
3720317 AQUARIUM FILTER  
A filtering device comprising a housing in which is provided a partition for separating the housing into first and second chambers in communicating relation. The housing is provided with at least...
3487935 BRACKET AND DISPOSABLE FILTER MEMBER FOR HOME AQUARIUMS  
3487440 SUBMERGED WATER TREATING DEVICE FOR AQUARIA  
3483985 FLIP-TOP AQUARIUM FILTER  
3362537 Aquarium filter  
3333701 Filter device for aquarium tanks  
3313421 Cartridge for filtering medium  
3301402 Aquarium filter  
3292792 Filter cartridge  
3247826 Filtering means for an aquarium  
3151069 Aquarium device  
3145168 Aquarium tank filter devices  
3006476 Aquarium filter  
2877898 Aquarium equipment  
Matches 1 - 26 out of 26