Patents by Inventor Nils E. G. Edwall

Nils E. G. Edwall 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).

  • Method and device for monitoring branched optical line network
    Patent number: 5452075
    Abstract: A method for monitoring branched optical line networks, adapted for transferring information signals via one or more branchings between an information source and an information receiver. The information signal is fed to a first in-gate to its respective branching and that a monitoring signal is fed into a second in-gate to its respective branching and that the branching connects the information signal and the monitoring signal to a first as well as to a second out-gate of the branching.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: September 19, 1995
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Nils E. G. Edwall