Patents by Inventor Walter Vargas

Walter Vargas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic syringe plunger
    Patent number: 4261358
    Abstract: A hypodermic needle for overcoming a patient's fear of the needle puncture; the device including a latch mechanism that is tripped so to free a compressed spring that instantly drives a hidden-from-view needle into the flesh.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: April 14, 1981
    Inventors: Walter Vargas, George Spector