During the war, their US patent status was special, thus we get a nice list....
(Could it be an artificial horizon?)
"Applications Made to the Federal Trade Commission for Licenses Under Enemy-Controlled Patents and TradeMarks Pursuant to the "Trading with the Enemy Act."
Patent No. 794,654, dated July 11, 1905, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for "Gyroscope." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 841,612, dated January 15, 1907, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for "Suspension of rotating apparatus and magnetic compasses." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street. New York city.
Patent No. 877,034, dated January 21, 1908, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for "Gyroscope." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 973,611, dated October 25,1910, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for "Gyroscope." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 1,019,582, dated March 5, 1912, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for "Gyroscope." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street. New York city.
Patent No. 1,092,816, dated April 14,1914, to Hermann Anschutz-Kaempfe, of Neumuhlen, near Kiel. Germany, for "Gyroscope-Compass." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 1,141,099, dated June 1, 1915, to Hermann Anschutz-Kaempfe, of Neumuhlen, near Kiel, Germany, for "Artificial horizon." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 1,173,241, dated February 20, 1916, to Hermann Anschutz-Kaempfe, of Kiel, Germany, for No. 3.3
"Gyroscopic apparatus." License applied for by Arma Engineering Company, of 252 West Twentyninth street, New York city.
Patent No. 1,186,339, dated June 6, 1916, to Max Schuler, of Neumuhlen, near Kiel, Germany, assignor to Anschutz & Co., of Neumuhlen, near Kiel, Germany, for " Gyroscopic apparatus." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 1,186,686, dated June 13, 1916, to Max Schuler, of Neumuhlen, near Kiel, Germany, assignor to Anschutz & Co., of Neumuhlen, near Kiel, Germany, for "Gyroscopic compass." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.
Patent No. 1,228,061, dated May 29, 1917, to Max Schuler, of Neumuhlen, near Kiel, Germany, assignor to Anschutz & Co., of Neumuhlen, near Kiel, Germany, for " Device for damping oscillations of a gyroscope-pendulum." License applied for by Arma Engineering Company, of 252 West Twenty-ninth street, New York city.