AU494622B2 - Telephone line control system - Google Patents

Telephone line control system

Info

Publication number
AU494622B2
AU494622B2 AU86478/75A AU8647875A AU494622B2 AU 494622 B2 AU494622 B2 AU 494622B2 AU 86478/75 A AU86478/75 A AU 86478/75A AU 8647875 A AU8647875 A AU 8647875A AU 494622 B2 AU494622 B2 AU 494622B2
Authority
AU
Australia
Prior art keywords
control system
telephone line
line control
telephone
line
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
AU86478/75A
Other versions
AU8647875A (en
Inventor
E. W. Hagedorn Guenter
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.)
Magnetic Controls Co
Original Assignee
Magnetic Controls Co
Filing date
Publication date
Application granted granted Critical
Publication of AU494622B2 publication Critical patent/AU494622B2/en
Priority claimed from US05/522,417 external-priority patent/US3943305A/en
Application filed by Magnetic Controls Co filed Critical Magnetic Controls Co
Publication of AU8647875A publication Critical patent/AU8647875A/en
Expired legal-status Critical Current

Links

AU86478/75A 1975-11-10 Telephone line control system Expired AU494622B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/522,417 US3943305A (en) 1974-11-11 1974-11-11 Telephone line control system

Publications (2)

Publication Number Publication Date
AU494622B2 true AU494622B2 (en) 1974-05-19
AU8647875A AU8647875A (en) 1977-05-19

Family

ID=

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