CA867456A - Emergency telephone system - Google Patents

Emergency telephone system

Info

Publication number
CA867456A
CA867456A CA867456A CA867456DA CA867456A CA 867456 A CA867456 A CA 867456A CA 867456 A CA867456 A CA 867456A CA 867456D A CA867456D A CA 867456DA CA 867456 A CA867456 A CA 867456A
Authority
CA
Canada
Prior art keywords
telephone system
emergency telephone
emergency
telephone
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
CA867456A
Inventor
H. Hugenholtz Eduard
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Publication date
Application granted granted Critical
Publication of CA867456A publication Critical patent/CA867456A/en
Expired legal-status Critical Current

Links

CA867456A Emergency telephone system Expired CA867456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA867456T

Publications (1)

Publication Number Publication Date
CA867456A true CA867456A (en) 1971-03-30

Family

ID=36352747

Family Applications (1)

Application Number Title Priority Date Filing Date
CA867456A Expired CA867456A (en) Emergency telephone system

Country Status (1)

Country Link
CA (1) CA867456A (en)

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