Thomas E. Murray Thomas E. Murray Thomas E. Murray (October 21, 1860 – July 21, 1929) was an American inventor and businessman who developed electric power plants for New York City as well as many electrical devices which influenced life around the world, including the dimmer switch and screw-in fuse. It has been said that he "invented everything from the power plant up to the light bulb". Murray is considered one of the most prolific inventors in history after Thomas Edison, holding 462 U.S. patents in his name. However, unlike Edison, Murray did not patent the work of others under his name; the
Thomas Edison National Historical Park Thomas Edison National Historical Park Thomas Edison National Historical Park preserves Thomas Edison's laboratory and residence, "Glenmont", in Llewellyn Park in West Orange in Essex County, New Jersey, United States. These were designed, in 1887, by Henry Hudson Holly. For more than 40 years, the laboratory had a major impact on the lives of people worldwide. Out of the West Orange laboratories came the motion picture camera, improved phonographs, sound recordings, silent and sound movies and the nickel-iron alkaline electric storage battery. The history of how the site became a National Historical Park is complicated. Edison's home was designated as