Patents by Inventor Lennart S. A. Lindqvist

Lennart S. A. Lindqvist 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).

  • Remotely controlled vacuum cleaner nozzle
    Patent number: 4447931
    Abstract: A nozzle for a vacuum cleaner which is provided with a suction conduit for attachment to the vacuum cleaner housing. The nozzle has two working members alternately in contact with the work surface. Either of these working members can be alternately placed into operative position by means of a servo mechanism in the form of an actuating member that is movable between two positions.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: May 15, 1984
    Assignee: Aktiebolaget Electrolux
    Inventor: Lennart S. A. Lindqvist