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."
... Canal Zone.
March 3 - Kaiser Wilhelm II of Germany becomes the first person to make a political recording of a document, using Thomas Edison's cylinder.
March 4 - ...