1893 - Thomas Edison received two U.S. patents. The first was for a "Cut Out for Incandescent Electric Lamps" and another for a "Stop Device" (No. 491,992-3). Also No. 492,150 for "Process of Coating Conductors for Incandescent Lamps."
... and opens in the vulva between the clitoris and the vaginal opening.
In the human male, the urethra is about 8 inches (200 mm) long and opens at the end of the penis. ...