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+++ 1973(?).l.c. caseta/cassette Memocord MT-570 Ind-X-Matic
1979.h. ITT Schaub-Lorenz RCX 75 Professional
++ ca1976.i. Telex Copiette 1&3
++ 1989(?).e. Philips PMC100 Composer
++ 1988.i. Sharp WQ-T238 - sample of twice mechanism
+++ 1988.h. Toshiba KT-RS1 
++ 1988.g. Fisher PH-M88
++ 1967-8.p. Concord F-100 = National RQ-3001 made for USA 
+++ 1968.j. Crown CSG-9350 first world's stereo portable radiorecorder
+++ 1968.i. Grundig DeJur Mini-Memo /EN7
+++ 1967.f. Mercury AP8300 - 1st US stereo car compact-cassette (TM) recorder 
++ 1967.o. National RQ-3001 
+++ 1966.f. Sears 1200 Playtape 
+++ 1968.a. Sony TC-50 = first ''compact-cassette'' voice recorder
+++ 1966.f.c. caseta/cartridge Playtape