The vehicle was awarded the German patent, number 37435, for which Karl Benz applied on January 29, 1886. Following official procedures, the date of the application became the patent date for the invention once the patent was granted, which occurred in November of that year. Although Benz's wife, Bertha, financed the development process, and would hold patent rights under modern law, as a married woman she was not allowed to apply for the patent. Benz officially unveiled his invention to the public on July 3, 1886, on the Ringstrasse (Ringstraße) in Mannheim, Germany.