Patents by Inventor Americo Colombo

Americo Colombo 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).

  • Manual pressure syringe for odontological use
    Patent number: 4382789
    Abstract: An improved manual pressure syringe for odontological use, includes a handgrip provided with a control lever, a barrel for a cartridge, and a bushing arranged on the longitudinal extension of the barrel. It also includes a shaft having a pushbutton at one end which is slidable in the bushing and acts on the piston of the cartridge, a thrust lever for the shaft operated by the control lever, and a coil spring arranged between the thrust lever and the bushing. The coil spring is formed of two end parts, the turns of which are of a larger diameter than that of the shaft, and an intermediate part, the turns of which are substantially of the same diameter as that of the shaft.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: May 10, 1983
    Assignee: Domenico Colombo
    Inventors: Domenico Colombo, Americo Colombo
  • Handgrip for a dental injection syringe
    Patent number: D297666
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: September 13, 1988
    Inventor: Americo Colombo