Patents by Inventor Peter Luethi

Peter Luethi 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).

  • Cleaning apparatus for test electrodes
    Patent number: 4228814
    Abstract: An apparatus for cleaning a test electrode in process control and chemical engineering. The apparatus includes a storage container from which a cleaning solution is intermittently drawn in by a pneumatically operating peristaltic pump. The pump supplies the cleaning solution to a nozzle which sprays the solution on the electrode.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: October 21, 1980
    Assignee: Zellweger Ltd.
    Inventors: Peter Luethi, Werner Steinmetz