Timeline of United States inventions (1890–1945) of these fibers for textile applications is more recent. The first commercial production of fiberglass was in 1936. In 1938, fiberglass was invented by Russell Games Slayter of Owens-Corning. 1938 Xerography Xerography, which means "dry writing" in Greek, is a process of making copies. Xerography makes copies without using ink. In this process, static electricity charges a lighted plate; a plastic powder is applied to the areas of the page to remain white. The photocopier was invented in 1938 by Chester Floyd Carlson who marketed his revolutionary device to about 20 companies before he could interest any. The Haloid Company,
Henry S. Parmelee Henry S. Parmelee Henry S. Parmelee or Parmalee (c. 1846 – 1902), was president of the Fair Haven and Westville Street Railway Company and was a piano maker from New Haven, Connecticut. He took the idea of Sir Hiram Maxim and then invented the second automatic fire sprinkler system in 1874, to protect his piano factory. While other patents for fire sprinklers predated Parmelee's work, he is credited with the first automated sprinkler head. His piano company, Mathushek Piano Manufacturing, is credited as being the first building in the United States to be equipped with a fire suppression system. He