Patents by Inventor Henry B. Larson

Henry B. Larson 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).

  • Particulate material sampling device
    Patent number: RE29087
    Abstract: This invention is a device for removing a sample of particulate material from predetermined locations in the mass of said material. .Iadd.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: December 28, 1976
    Inventor: Henry B. Larson