Method to prevent unauthorized use of cassette tape recorders an

Details Method to prevent unauthorized use of cassette tape recorders an Method to prevent unauthorized use of cassette tape recorders an

1976-11-16

1978-12-26

Wolfe, Robert L.

Locks

Portable

70432, E05B 7300

Patent

active

041310012

ABSTRACT:
A method and a device to prevent unauthorized use of cassette tape recorders, comprising of a cassette shaped part, insertable into a cassette tape recorder through the cassette opening, said part being arranged with locking means, thus enabling the part to take up an interlocked relationship with the cassette tape recorder when inserted into same.

REFERENCES:
patent: 3130571 (1964-04-01), Neumann

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