CA189590A - Telephone transmission system - Google Patents

Telephone transmission system

Info

Publication number
CA189590A
CA189590A CA000189590A CA189590DA CA189590A CA 189590 A CA189590 A CA 189590A CA 000189590 A CA000189590 A CA 000189590A CA 189590D A CA189590D A CA 189590DA CA 189590 A CA189590 A CA 189590A
Authority
CA
Canada
Prior art keywords
transmission system
telephone transmission
telephone
transmission
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
CA000189590A
Other languages
French (fr)
Inventor
Ray S. Wilbur
Ray F. Lovelee
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA189590A publication Critical patent/CA189590A/en
Expired legal-status Critical Current

Links

CA000189590A 1918-02-15 1918-02-15 Telephone transmission system Expired CA189590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA189590T 1918-02-15

Publications (1)

Publication Number Publication Date
CA189590A true CA189590A (en) 1919-04-08

Family

ID=45309241

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000189590A Expired CA189590A (en) 1918-02-15 1918-02-15 Telephone transmission system

Country Status (1)

Country Link
CA (1) CA189590A (en)

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