Patents by Inventor Erich E. F. Kratzer

Erich E. F. Kratzer 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).

  • Spent shell container
    Patent number: 4166333
    Abstract: A container assembly adapted to be mounted adjacent the action of a firearm for gathering the shells as they are ejected from the firearm, whereby the spent shells may be collected for re-use.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: September 4, 1979
    Inventor: Erich E. F. Kratzer