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++ 1966.d. Blaupunkt Twen Junior 
+++ 1968.i.c. caseta/cassette Grundig DeJ 614
++ 1964.f. Norelco 150 - first compact-cassette (TM) recorder made by Philips for USA
+++ 1964.c. Sanyo M-35 Micro-Pack - first cart recorder w variable speed
+++ 1964.c.c. caseta/cassette Sanyo Magazine 
++ 1959.b. ITC Omega = Fidelipac deck broadcast recorder
+++ 1958.a. RCA Victor CP-1 
+++ 1947.a. RCA MI-12875 - first domestic cartridge recorder
+++ 1947.a.c. caseta/cartridge RCA MI-12877
+ 1996.a. Philips AZ 1000
+++ 1991.a. Philips DCC = Digital Compact Cassette
++ 1991.b. Sony DTC-690
+++ 1992.c.c. Sony NTC - smallest audio cassette ever made
+ 1992.e. Philips AW7150
+++ 1992.c. Sony NT-1 -smallest digital cassette-recorder