CA422883A - Telephone calling apparatus - Google Patents

Telephone calling apparatus

Info

Publication number
CA422883A
CA422883A CA422883A CA422883DA CA422883A CA 422883 A CA422883 A CA 422883A CA 422883 A CA422883 A CA 422883A CA 422883D A CA422883D A CA 422883DA CA 422883 A CA422883 A CA 422883A
Authority
CA
Canada
Prior art keywords
telephone calling
calling apparatus
telephone
calling
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
CA422883A
Other languages
French (fr)
Inventor
Ernest Lomax Clarence
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.)
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA422883A publication Critical patent/CA422883A/en
Expired legal-status Critical Current

Links

CA422883A Telephone calling apparatus Expired CA422883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA422883T

Publications (1)

Publication Number Publication Date
CA422883A true CA422883A (en) 1944-09-26

Family

ID=35533883

Family Applications (1)

Application Number Title Priority Date Filing Date
CA422883A Expired CA422883A (en) Telephone calling apparatus

Country Status (1)

Country Link
CA (1) CA422883A (en)

Similar Documents

Publication Publication Date Title
CA422883A (en) Telephone calling apparatus
CA422194A (en) Telephone calling device
CA424750A (en) Telephone calling device
CA423185A (en) Telephone substation apparatus
CA424238A (en) Telephone substation apparatus
CA419622A (en) Telephone calling dial
AU130219B2 (en) Telephone exchange apparatus
CA423458A (en) Telephone call transmitter device
CA417943A (en) Telephone system
CA418315A (en) Telephone system
CA418339A (en) Telephone system
CA418615A (en) Telephone system
CA418617A (en) Telephone system
CA419526A (en) Telephone system
CA420335A (en) Telephone system
CA420570A (en) Telephone system
CA420938A (en) Telephone system
CA421036A (en) Telephone system
CA421423A (en) Telephone system
CA421770A (en) Telephone system
CA421771A (en) Telephone system
CA422031A (en) Telephone system
CA422193A (en) Telephone system
CA422195A (en) Telephone system
CA422283A (en) Telephone system