Patents by Inventor Sigrid Dilger

Sigrid Dilger 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).

  • Protective mask
    Patent number: 4665567
    Abstract: A protective mask which is to be worn when dressing or changing clothes so as to protect a facial makeup or a hairdo, comprises a hood which is placed over the head and has a lower open end in through which the head is passed and which is made of an air permeable transparent material.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: May 19, 1987
    Inventor: Sigrid Dilger