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."
... has an excretory function in both sexes, to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm.
The external urethral ...