Patents by Inventor Robert E. Greenstien

Robert E. Greenstien 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).

  • Method for privately controlling an elevator
    Patent number: 4655324
    Abstract: Elevator commands, such as car calls, are entered through a wireless, hand-held transmitter. A command is received and registered as if it were directly entered on the car-operating panel. Transmission of some calls is delayed after the call is entered on the transmitter.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: April 7, 1987
    Assignee: Otis Elevator Company
    Inventors: Gary M. Meguerdichian, Robert E. Greenstien