CA413015A - Electrical signalling system responding device - Google Patents

Electrical signalling system responding device

Info

Publication number
CA413015A
CA413015A CA413015A CA413015DA CA413015A CA 413015 A CA413015 A CA 413015A CA 413015 A CA413015 A CA 413015A CA 413015D A CA413015D A CA 413015DA CA 413015 A CA413015 A CA 413015A
Authority
CA
Canada
Prior art keywords
responding device
signalling system
system responding
electrical signalling
electrical
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
CA413015A
Other languages
French (fr)
Inventor
Norton Roseby Philip
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 Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA413015A publication Critical patent/CA413015A/en
Expired legal-status Critical Current

Links

CA413015A Electrical signalling system responding device Expired CA413015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA413015T

Publications (1)

Publication Number Publication Date
CA413015A true CA413015A (en) 1943-06-08

Family

ID=35522185

Family Applications (1)

Application Number Title Priority Date Filing Date
CA413015A Expired CA413015A (en) Electrical signalling system responding device

Country Status (1)

Country Link
CA (1) CA413015A (en)

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