CA380768A - Systeme avertisseur telephonique - Google Patents

Systeme avertisseur telephonique

Info

Publication number
CA380768A
CA380768A CA380768A CA380768DA CA380768A CA 380768 A CA380768 A CA 380768A CA 380768 A CA380768 A CA 380768A CA 380768D A CA380768D A CA 380768DA CA 380768 A CA380768 A CA 380768A
Authority
CA
Canada
Prior art keywords
alarm system
telephone alarm
telephone
alarm
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
CA380768A
Other languages
English (en)
Inventor
M. Johnson John
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA380768A publication Critical patent/CA380768A/fr
Expired legal-status Critical Current

Links

CA380768A Systeme avertisseur telephonique Expired CA380768A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA380768T

Publications (1)

Publication Number Publication Date
CA380768A true CA380768A (fr) 1939-04-18

Family

ID=35386011

Family Applications (1)

Application Number Title Priority Date Filing Date
CA380768A Expired CA380768A (fr) Systeme avertisseur telephonique

Country Status (1)

Country Link
CA (1) CA380768A (fr)

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