Optical, measuring, signaling, regulating, controlling, checking, and supervision apparatus and instruments, namely, electronic sensors for sensing pressure, motion, temperature, electric current, voltage, distance, magnetic field, or acceleration for use with safety catchers, safety locks and locking units for securing heavy loads or machinery and electric locking units; brake controllers; brake fluid testers; electropneumatic modules being electric control panels; electropneumatic modules b...

computer systems comprised of computer, computer monitor, computer keyboard, computer memories, computer mouse