Patents by Inventor Charles F. Franz

Charles F. Franz 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).

  • Patent number: 3980226
    Abstract: An evacuateable bag is provided for use as a casing about articles to be stored. The bag is of thin flexible material having one end thereof provided with a large opening through which articles are inserted. After the bag is filled, the large opening is closed and the bag will partially conform to the shape of the article. Oral evacuation means is provided to remove entrapped air from the bag and cause the bag to substantially completely collapse about the article and more closely conform to its shape. After evacuation, seal means is provided on the oral evacuation means to maintain the bag in the evacuated condition.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: September 14, 1976
    Inventor: Charles F. Franz