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- ++ 1962(?).k. Reditune TP60
- +++ 1951.b. Loewe Optaphon 51 WAP - world's 1st cassette + record player mix
- +++ 1967.s. Harman Kardon SC=2520 - world 1st 3 in 1 music centre
- ++ 1982 h. Shebro PB-1 - microcassette player + FM radio headset
- +++ 1951 c.c. Loewe Optaphon - world's first cassette with magnetic tape
- Lodewijk/Lou F. Ottens - compact-cassette project coordinator
- dr. Karl Daniel - inventator si promotorul casetei fara sfarsit/endless cassette inventor & promoter
- + 1964.f.c Norelco compact-cassette -first model
- William Powell Lear - 8-track cartridge inventor
- +++ 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
- ++ 1971(?).f. Norelco 3170 - first Philips (USA) stereo portable radiorecorder
- ++ 1970.n. Sony CF-100 - first Sony radiorecorder
- ++ 1956-9 Arvin Industries - Morse signal coder + decoder