Patents by Inventor Alvin J Waldner

Alvin J Waldner 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).

  • Sensor holder for bin
    Patent number: D443841
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: June 19, 2001
    Inventor: Alvin J Waldner
  • Level-alert sensor
    Patent number: D423970
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 2, 2000
    Inventor: Alvin J Waldner