Patents by Inventor Douglas D. Maruszczak

Douglas D. Maruszczak 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).

  • Publication number: 20040095254
    Abstract: A doorbell answering system includes is sensor to sense the presence of a visitor at an exterior panel. The system announces a message greeting to the visitor, asking the visitor to identify themselves. The visitor's response is recorded by the exterior panel and played at an interior panel, allowing a resident to monitor the visitor's response. The interior panel also records the visitor's response for subsequent playback in a controlled manner via a control panel. The system may store multiple visitor messages, each identified by a date and time. During monitoring, the resident may open the door, ignore the visitor, or initiate a warning alarm, via two buttons provided at the interior panel. The resident may depress the two buttons, thereby sending a signal to the exterior panel to announce the warning alarm. In an example, the warning alarm is loud enough to cover an area, such as a neighborhood block, to ward off the visitor.
    Type: Application
    Filed: September 22, 2003
    Publication date: May 20, 2004
    Inventor: Douglas D. Maruszczak