Patents by Inventor Leo L. Mettler

Leo L. Mettler 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).

  • Air freshener dispenser
    Patent number: 4301095
    Abstract: A superior room air freshener is disclosed having a short distance of travel from point of entry to egress for the delivery of a volatile liquid refreshener. The device is battery operated and can be wall mounted or displayed on a table.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: November 17, 1981
    Assignee: Product Enterprise, Inc.
    Inventors: Leo L. Mettler, Arthur L. Johnson
  • Automated aerosol mist dispenser
    Patent number: 3974941
    Abstract: Short bursts of an atomized liquid, such as an air freshener, medication or insecticide, are emitted at desired intervals from a spray nozzle in communication with a conventional aerosol can containing the fluid under pressure. Interposed in the flow is a normally closed piston valve opened by electromagnetic means, the period between bursts and the burst duration being determined by RC (resistor-capacitor) circuitry.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: August 17, 1976
    Inventor: Leo L. Mettler