Patents by Inventor Martin R. Zedler

Martin R. Zedler 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: 4247846
    Abstract: An alarm system for notifying personnel in an adjustably set priority sequence of an alarm condition includes one or more alarm sensors, a central alarm station, a plurality of primary remote stations, and one or more secondary remote stations. The alarm sensors are connected to the central alarm station to communicate the occurrence of alarm conditions thereto. The central alarm station includes a priority selector device, a device for establishing a primary notification signal based upon the signals received from the alarm sensors and upon the setting of the priority selector device. The central alarm station also includes a transmitter for transmitting the notification signal to the primary remote stations and a receiver for receiving an acknowledgement signal from the primary remote stations.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: January 27, 1981
    Assignee: Conoco, Inc.
    Inventor: Martin R. Zedler