Patents by Inventor Hedwig Anzinger

Hedwig Anzinger 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).

  • Double-walled masonry
    Patent number: 4422271
    Abstract: A double walled masonry with an interior insulating layer of mineral wool or the like and a free space between the insulating layer and outer wall for airing the masonry.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: December 27, 1983
    Inventor: Hedwig Anzinger