Patents by Inventor Frank Carl Donofrio

Frank Carl Donofrio 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).

  • Encryption device interlock
    Patent number: 4091246
    Abstract: Interlock means are described for protecting against the surreptitious entry into, and tampering with security type communication systems. A connector interlock plate is provided which prevents the removal of an access cover on the electronic device cabinet without the first removal of a standard cable connector assembly. Concurrently, removal of the cable assembly actuates an electrical switch which destroys the confidential information being stored and processed within the device.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: May 23, 1978
    Assignee: Burroughs Corporation
    Inventors: Frank Carl Donofrio, Angelo Richard DiPietro