U.S. federal trademark · Serial No. 74456914 · Reg. No. 1885879
gyrocompasses, receiver apparatus, gyrocompasses with remote transmission, other apparatus built in connection with gyrocompasses, i.e., direction diopter, course and rudder position printers, register apparatus, control and ruling devices, measuring and watching instruments with built-in gyros
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.