Patents by Inventor Carlo G. Parrini

Carlo G. Parrini 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).

  • Printing machines used in photolithography, repro work, screen printing, and bromography
    Patent number: 4460272
    Abstract: An improvement in printing machines used in photolithography, repro work, screen printing, and bromography having a glass plate and a vacuum table between which, for example, a film containing the drawing to be reproduced and the plate to be engraved are laid, after which the air between the superimposed plates is sucked out by means of a vacuum pump, characterized by the fact that the underside of the glass plate has a finely-grained rough surface, across which the air is able to escape on all sides.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: July 17, 1984
    Assignee: Repro Master Electronic S.r.L.
    Inventor: Carlo G. Parrini