Patents by Inventor Alexander Maltezos

Alexander Maltezos 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).

  • International speaker telephone
    Patent number: 5014301
    Abstract: The invention enhances a payphone by providing multilingual instructions to the user on how to complete a phone call. This is accomplished by providing a language directory listing at the payphone. Upon actuating the proper code for the language desired on the dial of the payphone, instructions will be given in that language.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: May 7, 1991
    Inventor: Alexander Maltezos