Patents by Inventor Eugen Hildinger, deceased

Eugen Hildinger, deceased 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).

  • Text processing device
    Patent number: 4434471
    Abstract: A text processing device which includes a typewriter and a memory device, in which a comparison circuit is provided, by means of which a write/read connection between the memory device and the typewriter is completed as a function of the positive result of a comparison between a stored identification and an identification input by means of the typewriter keyboard, for the protection of stored text information against changes and unauthorized access by third parties.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: February 28, 1984
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eugen Hildinger, deceased