++ 1956-9 Arvin Industries - Morse signal coder + decoder 
+ 1956.a. Tefifon KC-1
+++ 1956.b Nora Selectophon T5 - 1-st (2-in-1 system using) endless magnetic tape cassette
+++ 1956.b.c. Nora T5 - first endless cassette with magnetic tape, also for pre-recorded music
+++ 1956 ?.c. Cousino MR-9000 ''Sales maker''
+++ 1957.a. Dictaphone Dictet MPA = world's 1st transistorised pocket tape recorder
+++ 1957.a.c. caseta/cassette Dictaphone Dictet - the 3-rd world's tape cassette; a 3-a caseta cu banda magnetica
++ 1957.b Tefifon U (KC1/KoU) - world' 2nd radio-cassette player; 1st radio-endless cassette
+++ 1957.c. caseta/cartridge Fidelipac (NAB)
+++ 1958.a. Saba TKR-15 Sabamobil = world's 1-st portable radio-cassette player 
+++ 1958.a.c.- caseta/cassette pt/for Saba TKR15 radiorecorder
+++ 1958.a. RCA Victor CP-1 
+++ 1958.a.c. caseta RCA Sound Tape Cartridge - 4-piste/tracks
+++ 1959.c. Minifon Attache = 1st european pocket cassette recorder
+++ 1959.c.c. caseta/cassette Minifon