Flat switch insertable into a magazine and usable as part of a s

Details Flat switch insertable into a magazine and usable as part of a s Flat switch insertable into a magazine and usable as part of a s

1986-10-23

1988-02-23

Picard, Leo P.

Education and demonstration

Psychology

340568, 340572, 340573, G09B 500

Patent

active

047267712

ABSTRACT:
A technique for supplying power from a battery to a transmitter included as part of an insert in a magazine which is used to monitor magazine readership. A switch in the insert is open when the magazine is closed to break the circuit to the transmitter. However, the switch is closed when the magazine is opened. Current is then supplied to the transmitter which emits an identification signal indicative of the magazine being read.

REFERENCES:
patent: 3534358 (1970-10-01), Stern
patent: 3618059 (1971-11-01), Allen
patent: 3826871 (1974-07-01), Kraemer
patent: 3891980 (1975-06-01), Lewis et al.
patent: 4112926 (1978-09-01), Schulman et al.
patent: 4157540 (1979-06-01), Oros

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