Patents by Inventor John A. Muhr

John A. Muhr 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).

  • Patent number: 11578819
    Abstract: A wire holder device is disclosed. The wire holder device may have four main faces and one wire channel running across the main face. Wire holder members may have four wire channel sections, which may have different volumes, that may be a slot for holding a wire. Between the wire holder members may be an unframed base section, which may provide a platform for a wire tie.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: February 14, 2023
    Inventor: John Muhr
  • Publication number: 20190338867
    Abstract: A wire holder device is disclosed. The wire holder device may have four main faces and one wire channel running across the main face. Wire holder members may have four wire channel sections, which may have different volumes, that may be a slot for holding a wire. Between the wire holder members may be an unframed base section, which may provide a platform for a wire tie.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 7, 2019
    Inventor: JOHN MUHR
  • Patent number: 4135988
    Abstract: A process for manufacturing printed circuit boards having plated through-holes. An epoxy glass substrate is laminated on opposite surfaces by a thin copper foil and subsequently apertures are drilled through the laminated substrate where the plated through-holes are desired. The exposed surfaces of the apertures are electroless copper plated. Then by means of a photoresist, the desired circuit images and the apertures are exposed and the initial electroless copper plating is removed again. The apertures and the desired circuit images are again plated by electroless copper plating to establish an initial copper thickness. The apertures in the desired circuit images are then electro-copper plated to the approximate thickness of the photoresist and preferably so that their thickness is less than the thickness of the photoresist. The copper plating is then electro-solder plated.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: January 23, 1979
    Assignee: General Dynamics Corporation
    Inventors: William P. Dugan, John A. Muhr