Patents by Inventor Alexander Spitzner

Alexander Spitzner 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: 4319130
    Abstract: A calculator has an alphanumeric keyboard and an alphanumeric display, in order to enable entry and read out of data corresponding to specified physical quantities or the like. Internally, the calculator comprises means for transforming the input quantities as a function of the type of units entered by way of the keyboard, to a given type of unit for processing. The calculator further transforms a type of unit for display either to a specified type of unit or to a unit that either is most readable and understandable to an operator, in accordance with a given relationship, or has the smallest exponential products.
    Type: Grant
    Filed: March 12, 1980
    Date of Patent: March 9, 1982
    Assignee: VEB Applikationszentrum Elektronik Berlin
    Inventor: Alexander Spitzner