8517: Electric app for line telephony/line telegraphy, incl curr line syste

851711: Telephone Sets For Line Telephony With Cordless Handsets 851719: Telephone Sets For Line Telephony; Videophones 851721: Facsimile Machines For Line Telephony 851722: Teleprinters For Line Telegraphy 851730: Telephonic or telegraphic switching apparatus 851750: Apparatus For Carrier-Current Line /or Digital Line Systems, Line Telephony 851780: Other Electrical Apparatus For Line Telephony or Line Telegraphy 851790: Parts of electrical apparatus for line telephone or line telegraphy 8517: Electric app for line telephony/line telegraphy, incl curr line syste