+++ 1956.b. Nora T5 - first endless cassette with magnetic tape, also for pre-recorded music
+++ 1951 c.c. Loewe Optaphon - world's first cassette with magnetic tape 
+ 1964.f.c Norelco compact-cassette -first model
+++ 1987 .d. caseta/cassette DAT = Digital Audio Tape
+++ 1974(?).g. caseta/cassette Memocord MC990 Ind-X-Matic - single cassette w. built-in counter 
+++ 1958.a.c.- caseta/cassette pt/for Saba TKR15 radiorecorder
+++ 1963 a.c. Philips EL 1903 - first compact-cassette(TM) model
+++ 1970.m.c. Sanyo Tape Cartridge
+++ 1942 .a. Textophon BW4 I - first audio cassette-3rd variant 
+++ 1962-3.f.c. 3M(Scotch) type 270
+++ 1975 (?).d. endless compact-cassette
+++ 1962.b.c. caseta/cassette Orrtronic Tapette
+++ 1963.b.c. caseta/cassette Cousino Echo-matic
+++ 1992.b. ADAT casssette
+++ 1973(?).l.c. caseta/cassette Memocord MT-570 Ind-X-Matic