The list of suppliers of the German electric and electronic industry
Private telecommunication switching systems (planning, installation, commissioning)
Personal paging systems (planning, installation, commissioning)
Portable transmitters and receivers for one-way communication, e.g. personal paging systems
Paging (staff calling and locating) systems, wireless (radio-operated)
Stephen Gentry
Frank Rotthoff
HRB 10384, Düsseldorf
1958
DE 119 368 178