LeMat revolver
Dr. Jean Alexandre Francois LeMat (1824–1883), is best known for the percussion cap revolver that bears his name (see LeMat revolver).
LeMat, then a New Orleans physician, secured U.S patent #15925 for his design on October 21, 1856. British patents for the same design were issued in 1859, and he later designed a revolver rifle of similar concept as the handgun.
fr:Jean Alexandre François LeMat ja:ジャン・アレクサンドル・ル・マット