Patents by Inventor Nils Herbert Edstrom

Nils Herbert Edstrom 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).

  • Telephone system comprising a satellite
    Patent number: 4018993
    Abstract: The invention relates to a telephone system comprising: a satellite arranged to relay a plurality of signalling channels and speech transmission channels; a plurality of earth stations having a plurality of line units each of which is connected to a subscriber, a signalling equipment connected to such line units and arranged to transmit reports about the states of such subscribers and to receive commands about allocated calling and called sides of the speech transmission channels to calling and called subscribers over the signalling channels, and a frequency synthesizer unit connected to the line units and arranged to connect the calling and called subscribers to their allocated sides of the speech transmission channels under control of the commands; and a central control station comprising central signalling equipment arranged to receive the reports and transmit the commands, and a control equipment connected to the central signalling equipment and arranged to generate the commands and address them to the ea
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: April 19, 1977
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Nils Herbert Edstrom
  • Telephone system comprising a satellite
    Patent number: 3986120
    Abstract: The invention relates to a telephone system comprising: a satellite arranged to relay a plurality of signalling channels and speech transmission channels; a plurality of earth stations having a plurality of line equipments each of which is connected to a subscriber, a signalling equipment connected to such line equipments and arranged to transmit reports about the states of such subscribers and to receive commands about allocated calling and called sides of the speech transmission channels to calling and called subscribers over the signalling channels, and a frequency synthesizer equipment connected to the line equipments and arranged to connect the calling and called subscribers to their allocated sides of the speech transmission channels under control of the commands; and a central control station comprising a second signalling equipment arranged to receive the reports and transmit the commands, and a control equipment connected to the second signalling equipment and arranged to generate the commands and ad
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: October 12, 1976
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Nils Herbert Edstrom, Bo Gustav Haglund