Magnetic tape cassette

Recording – communication – or information retrieval equipment – Computer – data processor equipment

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D02840774

REFERENCES:
patent: D256912 (1980-09-01), Lonberger
patent: 4191984 (1980-03-01), Tsukidate et al.
patent: 4440359 (1984-04-01), Nelson
Advertising brochure entitled TDK Cassette Tapes published Oct. 1979, Japan.
Photocopy of two audio compact cassettes, manufactured by TDK in Japan.
High Fidelity, 4-82, p. 2, SA-X C90 TDK Cassette.
Stereo Review, 10-82, p. 68, BASF 90 Professional II Cassette.

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