CA18308A - Appareil avertisseur electro-magnetique - Google Patents

Appareil avertisseur electro-magnetique

Info

Publication number
CA18308A
CA18308A CA000018308A CA18308DA CA18308A CA 18308 A CA18308 A CA 18308A CA 000018308 A CA000018308 A CA 000018308A CA 18308D A CA18308D A CA 18308DA CA 18308 A CA18308 A CA 18308A
Authority
CA
Canada
Prior art keywords
magneto
call signal
signal apparatus
electric call
electric
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
CA000018308A
Other languages
English (en)
Inventor
Charles Brown
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.)
BELL TELEPHONE Co
Original Assignee
BELL TELEPHONE Co
Publication date
Application granted granted Critical
Publication of CA18308A publication Critical patent/CA18308A/fr
Expired legal-status Critical Current

Links

CA000018308A Appareil avertisseur electro-magnetique Expired CA18308A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA18308T

Publications (1)

Publication Number Publication Date
CA18308A true CA18308A (fr) 1883-12-15

Family

ID=45134851

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000018308A Expired CA18308A (fr) Appareil avertisseur electro-magnetique

Country Status (1)

Country Link
CA (1) CA18308A (fr)

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