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United States Utility Patents
4,812,270 - 4,812,279

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NumberTitle
4,812,270 Novel water softening membranes
4,812,271 Continuous process for producing long .alpha.-alumina fibers
4,812,272 Process by compacting a porous structural member for hot isostatic pressing
4,812,273 Moulding of construction products by vibration and pressure applications at relatively small intensities
4,812,274 Method of making extruded conduits
4,812,275 Process for the production of molded articles having partial metal plating
4,812,276 Stepwise formation of channel walls in honeycomb structures
4,812,277 Process for the preparation of polyvinyl alcohol articles of high strength and modulus
4,812,278 Process for preparing mold
4,812,279 Process for preparation of cellulose ester films



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