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United States Utility Patents
4,921,480 - 4,921,489

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NumberTitle
4,921,480 Fixed volume infusion device
4,921,481 Enteral feeding system utilizing gastrointestinal myoelectrography
4,921,482 Steerable angioplasty device
4,921,483 Angioplasty catheter
4,921,484 Mesh balloon catheter device
4,921,485 Catheter for use in the surgical correction of a nasolacrimal duct obstruction
4,921,486 Disposable syringe with retracting needle
4,921,487 External device for injecting medicine
4,921,488 Aspirator device for body fluids
4,921,489 Hypodermic needle shield



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