CA421073A - Timbre electrique avertisseur - Google Patents

Timbre electrique avertisseur

Info

Publication number
CA421073A
CA421073A CA421073A CA421073DA CA421073A CA 421073 A CA421073 A CA 421073A CA 421073 A CA421073 A CA 421073A CA 421073D A CA421073D A CA 421073DA CA 421073 A CA421073 A CA 421073A
Authority
CA
Canada
Prior art keywords
electric signal
signal bell
bell
electric
signal
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
CA421073A
Other languages
English (en)
Inventor
N. Middleton Guy
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 CA421073A publication Critical patent/CA421073A/fr
Expired legal-status Critical Current

Links

CA421073A Timbre electrique avertisseur Expired CA421073A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA421073T

Publications (1)

Publication Number Publication Date
CA421073A true CA421073A (fr) 1944-06-27

Family

ID=35532021

Family Applications (1)

Application Number Title Priority Date Filing Date
CA421073A Expired CA421073A (fr) Timbre electrique avertisseur

Country Status (1)

Country Link
CA (1) CA421073A (fr)

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