CA270874A - Electric signalling device - Google Patents

Electric signalling device

Info

Publication number
CA270874A
CA270874A CA270874A CA270874DA CA270874A CA 270874 A CA270874 A CA 270874A CA 270874 A CA270874 A CA 270874A CA 270874D A CA270874D A CA 270874DA CA 270874 A CA270874 A CA 270874A
Authority
CA
Canada
Prior art keywords
signalling device
electric signalling
electric
signalling
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
CA270874A
Other languages
French (fr)
Inventor
Joseph Smith Osmond
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 CA270874A publication Critical patent/CA270874A/en
Expired legal-status Critical Current

Links

CA270874A Electric signalling device Expired CA270874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA270874T

Publications (1)

Publication Number Publication Date
CA270874A true CA270874A (en) 1927-05-24

Family

ID=35200905

Family Applications (1)

Application Number Title Priority Date Filing Date
CA270874A Expired CA270874A (en) Electric signalling device

Country Status (1)

Country Link
CA (1) CA270874A (en)

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