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."
... et Sécurité du Territoire (DST)
Deuxieme Bureau[?] (Defunct)
Direction Générale de la Sécurité Extérieure[?] (DGSE)
Secretariat General de la Defense ...