Patents by Inventor Alice R. Nagel

Alice R. Nagel 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).

  • Locking device
    Patent number: 3953990
    Abstract: A chain having a spring-loaded locking tongs at one or both ends for snapping onto a link of the chain or onto a ring provided for that purpose. Collar and chain combinations especially adapted for use for animals are described.
    Type: Grant
    Filed: March 30, 1973
    Date of Patent: May 4, 1976
    Inventor: Alice R. Nagel