science · 29 May 1906 · 118 years ago
In 1906, Thomas A. Edison was issued a series of U.S. patents, (Nos 821,622 - 821,627), respectively for a "Process of Cleaning Metallic Surfaces" in the form of long continuous strips to prepare for coating (ex. by electroplating); as for a "Storage-Battery-Filling Apparatus," which provided a means to indicate when the proper filling level of solution has been reached; a "Gas-Separator for Storage Batteries"; a "Process of Treating Alkaline Storage Batterie"; a "Process of Making Metallic Films or Flakes"; and a "Process of Making Metallic Flakes or Scales."
OnThisDay.net