CA133253A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA133253A
CA133253A CA000133253A CA133253DA CA133253A CA 133253 A CA133253 A CA 133253A CA 000133253 A CA000133253 A CA 000133253A CA 133253D A CA133253D A CA 133253DA CA 133253 A CA133253 A CA 133253A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA000133253A
Other languages
English (en)
Inventor
Edward E. Clement
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA133253A publication Critical patent/CA133253A/fr
Expired legal-status Critical Current

Links

CA000133253A 1909-12-21 1909-12-21 Systeme d'echange telephonique Expired CA133253A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA133253T 1909-12-21

Publications (1)

Publication Number Publication Date
CA133253A true CA133253A (fr) 1911-05-23

Family

ID=45252973

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000133253A Expired CA133253A (fr) 1909-12-21 1909-12-21 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA133253A (fr)

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