+++ 1971 (?).j. Continu-sound - endless cartridge
+++ 1982.g. Sony U-matic - digital profi audio cartridge
+++ 1983.j. Sony Betamax - digital profi audio cartridge
+++ 1967.r. Philips N2600 - 1-st european car compact-cassette(TM) player 
+++ 1944(?).a. RD-11B/GNQ-1 - military wire recorder/reproducer unit
++ 1998?.a. adaptor caseta-CD/MP3/MD - cassette-CD/MP3/MD adaptor
++ 1973?.k. Binatone - stereo8 to compact-cassette adaptor
+++ 1967.m. Muntz Porta Four PF-30
+++ 1972.h,a. SG-100 - world's first & smallest 3 in 1 audio portable device 
+++ 1972.h,b. SG-100 - world's smallest 3 in 1 audio portable device 
++ 1961.e Grundig Cassette - first tape reel we met the word "cassette" 
+++ 1964-5.a. Lear Jet A25 - car stereo8/8 track cartridge player, made by the inventor's company (Bill Lear)a
+++ 1971.e.c. Hipac - japanese endless cassette/cartridge inspired from Playtape
+++ 1964.e. Scotch Wollensack 94-AG - world's biggest cartridge player 
+++ 1963.a. Philips EL3300 - world's first "compact-cassette"recorder - the classic starting point of "cassette" era