Patents by Inventor Ingemar Alsenfelt

Ingemar Alsenfelt 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).

  • Aspirator system for sound emitters
    Patent number: 4480658
    Abstract: A fluid operated pressure oscillation generator having an additional inlet passage to permit removal of a cover.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: November 6, 1984
    Assignee: Kockumation AB
    Inventors: Charles E. Blakeslee, Ingemar Alsenfelt