Patents by Inventor Ronnie E. Mellgren

Ronnie E. Mellgren 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).

  • Fastening arrangement in a telephone instrument
    Patent number: 4277652
    Abstract: PCT No. PCT/SE 78/00061 Sec. 371 Date June 24, 1979 Sec. 102(e) Date May 31, 1979 PCT Filed Oct. 18, 1978 PCT Pub. No. W079/00227 PCT Pub. Date May 3, 1979A fastening arrangement for one or more circuit cards in a telephone instrument having a housing comprising a base plate with walls around the perimeter of the housing extending substantially perpendicular to the base plate and a rear casing which has a planar surface extending perpendicular to the base plate and directed towards the front of the instrument. Supporting elements are mounted on the planar surface and have the form of projections with grooves to receive a circuit card. The front wall of the base plate carries supporting elements for the circuit cards.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: July 7, 1981
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Leif Branden, Jan F. Bruun, Olle Holm, Ronnie E. Mellgren, Karl A. Ryr, Carl-Axel Stromer, Erling Tronslien