So What Happened Today in Patent History?

The IP Factor:
In 1805, a Viennese butcher Johann Lahner invented a new sausage — he called it a frankfurter.
In 1914, New York debutante Mary Phelps Jacob was granted a patent for her invention, which became known as the brassiere.
In 1969,  I was born!
Apart from the date and intellectual property, it is difficult to see a common theme linking these auspicious events.