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Patent

Hänvisningar finns i följande patent

citeras i Registreringsdatum Utfärdandedatum Ursprunglig innehavare Titel
US506105227 jul 199029 okt 1991Television picture enhancement device
US532527823 nov 199228 jun 1994Curtis Manufacturing Company, Inc.Compact combined light and magnifier apparatus for a hand held computer with video screen
US53252807 jun 199328 jun 1994Curtis Manufacturing Company, Inc.Light apparatus for illuminating a compact computer video screen
US577426022 nov 199430 jun 1998Technique for depth of field viewing of images with increased clarity and contrast
US606719114 jan 199823 maj 2000DOFI TechnologiesTechnique for depth of field viewing of images using an aspherical lens
US631394610 feb 20006 nov 2001Technique for depth of field viewing of images using an aspherical lens
US650011414 mar 200031 dec 2002DOFI Technologies, Inc.Method of extracting biopsy cells from the breast
USD28868631 dec 198510 mar 1987Television magnification unit
USD29825015 mar 198525 okt 1988Image magnifier for computer displays
USD39831618 aug 199715 sep 1998Magnifying device for the display of a videocassette recorder or stereo
USD40300522 okt 199722 dec 1998Computer aided drafting portable viewer