CA187344A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA187344A
CA187344A CA000187344A CA187344DA CA187344A CA 187344 A CA187344 A CA 187344A CA 000187344 A CA000187344 A CA 000187344A CA 187344D A CA187344D A CA 187344DA CA 187344 A CA187344 A CA 187344A
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
CA000187344A
Other languages
English (en)
Inventor
Arthur B. Sperry
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 CA187344A publication Critical patent/CA187344A/fr
Expired legal-status Critical Current

Links

CA000187344A 1917-10-17 1917-10-17 Systeme d'echange telephonique Expired CA187344A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA187344T 1917-10-17

Publications (1)

Publication Number Publication Date
CA187344A true CA187344A (fr) 1918-11-05

Family

ID=45306995

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000187344A Expired CA187344A (fr) 1917-10-17 1917-10-17 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA187344A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD946764S1 (en) * 2020-06-30 2022-03-22 Bfly Operations, Inc. Ultrasound probe
USD954972S1 (en) * 2020-06-30 2022-06-14 Bfly Operations, Inc. Ultrasound probe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD946764S1 (en) * 2020-06-30 2022-03-22 Bfly Operations, Inc. Ultrasound probe
USD954972S1 (en) * 2020-06-30 2022-06-14 Bfly Operations, Inc. Ultrasound probe

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