CA1125936A - Dispositif de restriction d'appels telephoniques interurbains - Google Patents

Dispositif de restriction d'appels telephoniques interurbains

Info

Publication number
CA1125936A
CA1125936A CA329,875A CA329875A CA1125936A CA 1125936 A CA1125936 A CA 1125936A CA 329875 A CA329875 A CA 329875A CA 1125936 A CA1125936 A CA 1125936A
Authority
CA
Canada
Prior art keywords
instrument
telephone
central office
analyzing
circuit
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
CA329,875A
Other languages
English (en)
Inventor
Regis B. Mellon
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.)
Akzona Inc
Original Assignee
Akzona Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Akzona Inc filed Critical Akzona Inc
Application granted granted Critical
Publication of CA1125936A publication Critical patent/CA1125936A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
CA329,875A 1978-07-05 1979-06-15 Dispositif de restriction d'appels telephoniques interurbains Expired CA1125936A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92212678A 1978-07-05 1978-07-05
US922,126 1992-07-29

Publications (1)

Publication Number Publication Date
CA1125936A true CA1125936A (fr) 1982-06-15

Family

ID=25446534

Family Applications (1)

Application Number Title Priority Date Filing Date
CA329,875A Expired CA1125936A (fr) 1978-07-05 1979-06-15 Dispositif de restriction d'appels telephoniques interurbains

Country Status (1)

Country Link
CA (1) CA1125936A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry