Klara E.F. Braun, DK51192C
Til Anvendelse ved Haarbehandling bestemt Ørebeskytter.
Image credit: Braun, K.E.F. (1934)
On January 27, 1936, Klara E.F. Braun of Copenhagen received a patent for a novel ear protector made of rubber, designed for use with electric hair curlers.
Date of Application: 20 September 1934
Date of Issuance: 27 January 1936
For more information, please refer to the following webpage:
Francesca Chiaradia
PhD Student in Economics
My research interests include law and economics, economics of innovation, and information economics.