The Hotpoint brand of electric iron originated in Ontario, California in 1904. In 1939 it continued to be manufactured there. By then, the successor to the original Pacific Electric Heating Company made a variety of other electrical appliances elsewhere. The Hotpoint name came from a suggestion from the wife of the iron’s inventor to concentrate the heat at the point for easier pressing around clothing features. It became so popular that the name was used for the other appliances, too.
Learn more about the company here: http://oac.cdlib.org/view?docId=c8qc027s&developer=local&style=oac4&s=1&query=1939+hotpoint&x=13&y
A book about streamlined irons can be found here: