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| Number | Title | Issue Date |
| 3965006 | Liquid waste disposal A liquid waste disposal unit for use in a hospital to handle potentially contaminated waste materials or the like is disclosed. The disposal unit has a funnel shaped wet bottom chamber connected to a trap section. A rinse means for a container extends up ... | 06/22/1976 |
| 3962086 | Apparatus for the separation of the components of an aqueous concrete grout An apparatus for the separation of the components of an aqueous concrete grout obtained from washing operations of automotive concrete mixers in a washing station comprising two tanks connected in series, into the first of which are mounted means to separ... | 06/08/1976 |
| 3959139 | Liquid purification system An improved hydrocyclone clarifier for removing contaminants from a liquid, wherein the contaminants are of higher density than the liquid. The cylindrical body, downwardly directed conical baffle, clean flow outlet at the top, and contaminated liquid ret... | 05/25/1976 |
| 3957637 | Filtration system and flow control method therefor A method and apparatus for controlling the operation of gravity or pressure filters in a filtration system. A bank of filter beds are provided for removing suspended solids from the fluid medium which are fed to the filters via a common inlet conduit. Eac... | 05/18/1976 |
| 3951788 | Sludge control and decant system A method and apparatus to automatically control the concentration of microorganisms in an activated sludge waste treatment system, consisting of establishing certain factors by laboratory measurements and field observations to determine the quantity of or... | 04/20/1976 |
| 3950249 | Sanitary waste treatment plant A self-contained toilet and sanitary waste treatment plant that has a delivery system, a biological treatment system and a water recovery system. The delivery system includes a vacuum-type flush toilet adapted to receive flush water from the water recover... | 04/13/1976 |
| 3935105 | Tubular filter in settler A separator for solid particles from a liquid, such as a dirty industrial machine tool coolant, comprising a settling tank with one or more frames or assemblies of horizontally extending tubular filters and means to removably clamp such frames against a s... | 01/27/1976 |
| 3933636 | Apparatus and method for disposing of solid human excrement in an engine-driven conveyance A waste disposal system and method which incinerates solid human excrement evacuated into a toilet bowl employing a reusable chemical flushing liquid. The liquid discharges into an individual holding tank and thereafter is reusable for additional flushes ... | 01/20/1976 |
