Żeglen Kazimierz was a Polish monk inventor who lived in the United States in the late 19th century. After Chicago Mayor Carter Harrison was assassinated in 1893, Kazimierz began developing a bulletproof vest. He patented his invention for a bulletproof vest in 1897.

1. ŻEGLEŃ KAZIMIERZ
(b. 1869 - d. 1910)
Living in the United States inventor, a monk Polish.
In 1890 he moved to the United States, where he took up duties in
the church. Stanislaus BiM in Chicago.
In 1893, after the death of Chicago Mayor Carter Harrison, who was
shot by an assassin in his own office and began work on
a bulletproof vest.
Patented his invention in 1897.
Natalia Orzechowska