Patents by Inventor Edward S. Ertl

Edward S. Ertl 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).

  • Telephone booth mounting arrangement
    Patent number: 4152874
    Abstract: A telephone booth construction utilizes a telephone mounting bracket and a telephone mounting cover. There are multiple screw holes in both the mounting bracket and the mounting cover and the holes are so arranged that the mounting bracket may be attached in two different positions on a wall of the booth. The mounting cover which has a telephone mounting opening may similarly be attached in two different positions on the mounting bracket, which different positions involve only the reversal of the mounting cover and provide for two different mounting heights for the telephone.
    Type: Grant
    Filed: February 10, 1978
    Date of Patent: May 8, 1979
    Assignee: Acoustics Development Corporation
    Inventor: Edward S. Ertl
  • Telephone booth
    Patent number: D251884
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: May 22, 1979
    Assignee: Acoustics Development Corporation
    Inventor: Edward S. Ertl