CA570978A - Systeme et appareil pour determiner les preferences des usages d'appareils recepteurs de signaux a ondes - Google Patents

Systeme et appareil pour determiner les preferences des usages d'appareils recepteurs de signaux a ondes

Info

Publication number
CA570978A
CA570978A CA570978A CA570978DA CA570978A CA 570978 A CA570978 A CA 570978A CA 570978 A CA570978 A CA 570978A CA 570978D A CA570978D A CA 570978DA CA 570978 A CA570978 A CA 570978A
Authority
CA
Canada
Prior art keywords
listening
determining
wave signal
signal receiver
viewing habits
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA570978A
Other languages
English (en)
Inventor
A. Rahmel Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TNC US Holdings Inc
Original Assignee
AC Nielsen Co
Publication date
Application granted granted Critical
Publication of CA570978A publication Critical patent/CA570978A/fr
Expired legal-status Critical Current

Links

CA570978A Systeme et appareil pour determiner les preferences des usages d'appareils recepteurs de signaux a ondes Expired CA570978A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA570978T

Publications (1)

Publication Number Publication Date
CA570978A true CA570978A (fr) 1959-02-17

Family

ID=35743525

Family Applications (1)

Application Number Title Priority Date Filing Date
CA570978A Expired CA570978A (fr) Systeme et appareil pour determiner les preferences des usages d'appareils recepteurs de signaux a ondes

Country Status (1)

Country Link
CA (1) CA570978A (fr)

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