CA220672A - Boite et commutateurs a transposition telephonique - Google Patents

Boite et commutateurs a transposition telephonique

Info

Publication number
CA220672A
CA220672A CA220672A CA220672DA CA220672A CA 220672 A CA220672 A CA 220672A CA 220672 A CA220672 A CA 220672A CA 220672D A CA220672D A CA 220672DA CA 220672 A CA220672 A CA 220672A
Authority
CA
Canada
Prior art keywords
telephone
switching box
transposition
transposition switching
box
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
CA220672A
Other languages
English (en)
Inventor
Love Ernest
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
Publication date
Application granted granted Critical
Publication of CA220672A publication Critical patent/CA220672A/fr
Expired legal-status Critical Current

Links

CA220672A Boite et commutateurs a transposition telephonique Expired CA220672A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA220672T

Publications (1)

Publication Number Publication Date
CA220672A true CA220672A (fr) 1922-07-11

Family

ID=35115116

Family Applications (1)

Application Number Title Priority Date Filing Date
CA220672A Expired CA220672A (fr) Boite et commutateurs a transposition telephonique

Country Status (1)

Country Link
CA (1) CA220672A (fr)

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