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+++ 1962-3.f. Revere M-2 - world's first çontinuous play" cartridge recorder
+ 1969.f. Telefunken CC Alpha
+ 1969.d. Ampex Micro 5 - first cassette deck of this producer 
+++ 1955.a. Mohawk Midgetape BR-1 - world's 1st pocket cass. recorder
+++ 1988.k.c. Pocket Rockers - smallest endless cassette 
+++ 1988.k. Pocket Rockers - smallest portable endless cassette player
+++ 1980.l.c. Philips LDB 4401 - world's first digital minicassette
+++ 1980.l. MDCR220/LDB 4051 - chassis for world's first digital mini-cassette
+++ 1970.m.c. Sanyo Tape Cartridge
++ 1970.k. Grundig CN 222 - first deck & HIFI (?) of this producer
+++ 1971.e. Pioneer M-7S Hipac
+++ 1956 ?.c. Cousino MR-9000 ''Sales maker''
+++ 1964.e.c. 3M/Scotch Cantata 700 = greatest audio cassette
+++ 1968.k. Muntz C-100 - first (?) car tape player of this producer
+++ 1963.d. OrrTronic P-600 AutoMate = first (?) car cartridge player made/used in USA