Patents by Inventor Georges Edmond Trichard

Georges Edmond Trichard 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).

  • Matrix printer comprising one or more stackable groups of printing wires
    Patent number: 3976180
    Abstract: A matrix printer comprising one or more identical groups of printing wires which are guided in ducts in stackable plates of synthetic material. In the case of a plurality of stacked groups, the distance at the area of the printing ends of the wires between two adjacent ducts in two different groups equals the distance between two adjacent ducts of the same group. Different paper widths can be accomodated and characters of different dimensions, curves, patterns and so-termed negative characters can be printed without movement of the groups.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: August 24, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Gerard Andre Jorigny, Jacques Royer, Georges Edmond Trichard