Electronic display interfaces and downloadable software; digital signal processors; electric and electronic circuits and downloadable software for railroad track controls; downloadable software for monitoring railroad track performance and railroad track alarms; electrical railway interlocking controllers composed of electrical switches, signaling lights, electronic circuit boards and downloadable software; radios; railroad and locomotive communication electronics and downloadable software; battery chargers; automatic transfer switches composed of electronic memory testers, color light simulator electronics, electricity surge arrester electronics, crossing track simulator electronics; telephone terminals; telephones; telephones incorporating intercommunication systems; telephone apparatus and receivers
Electrical and Scientific Apparatus