Bridgeport Projectile Company
museumofcthistory.org
"The Bridgeport Projectile Company was a fake arms manufacturer created by German nobility during World War I to tie up American defense spending. It was uncovered when a briefcase was stolen by a U.S. Secret Service agent, revealing the plot." reddit.com
It was set up by Franz Dagobert Johannes von Rintelen, who posed as businessman Frederick Hansen along with Heinrich Albert who sereved at the German embassy in Washington, D.C.