Patents by Inventor Raul C. Miguel

Raul C. Miguel 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).

  • Mat switch
    Patent number: 4037069
    Abstract: A mat switch includes top and bottom cardboard sheets having opposed faces on which are formed complementary electrodes. Each electrode is a plurality of elongated generally parallel first bands of metal foil adhesively secured to the opposed faces which are electrically interconnected by a pair of second bands perpendicularly directed to the first bands. A relatively thin dielectric sheet is laminated between the opposed faces and includes a plurality of parallel elongated apertures in register with the first bands.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: July 19, 1977
    Inventors: Roland Gonzalez, Raul C. Miguel