Patents by Inventor Dag E:son Akerberg

Dag E:son Akerberg 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: 3973200
    Abstract: In a system for wireless staff location where non-coded acknowledgement signals are transmitted from a called staff locator to identify the staff locator from which the acknowledgement signal is sent which is characterized by the fact that the acknowledgement signal is allotted to the staff locator whose coded call signal was last transmitted.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: August 3, 1976
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Dag E:son Akerberg