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CA669994A - Order wire and alarm circuits - Google Patents

Order wire and alarm circuits

Info

Publication number
CA669994A
CA669994A CA669994A CA669994DA CA669994A CA 669994 A CA669994 A CA 669994A CA 669994 A CA669994 A CA 669994A CA 669994D A CA669994D A CA 669994DA CA 669994 A CA669994 A CA 669994A
Authority
CA
Canada
Prior art keywords
order wire
alarm circuits
alarm
circuits
wire
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
CA669994A
Inventor
H. Haas Hammond
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
Publication date
Application granted granted Critical
Publication of CA669994A publication Critical patent/CA669994A/en
Expired legal-status Critical Current

Links

CA669994A Order wire and alarm circuits Expired CA669994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA669994T

Publications (1)

Publication Number Publication Date
CA669994A true CA669994A (en) 1963-09-03

Family

ID=35970339

Family Applications (1)

Application Number Title Priority Date Filing Date
CA669994A Expired CA669994A (en) Order wire and alarm circuits

Country Status (1)

Country Link
CA (1) CA669994A (en)

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