CA70308A - Electrical semaphore system - Google Patents

Electrical semaphore system

Info

Publication number
CA70308A
CA70308A CA000070308A CA70308DA CA70308A CA 70308 A CA70308 A CA 70308A CA 000070308 A CA000070308 A CA 000070308A CA 70308D A CA70308D A CA 70308DA CA 70308 A CA70308 A CA 70308A
Authority
CA
Canada
Prior art keywords
electrical
semaphore system
semaphore
electrical semaphore
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
CA000070308A
Other languages
French (fr)
Inventor
Judson Shoecraft
Charles C. Gardner
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA70308A publication Critical patent/CA70308A/en
Expired legal-status Critical Current

Links

CA000070308A 1900-03-20 1900-03-20 Electrical semaphore system Expired CA70308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA70308T 1900-03-20

Publications (1)

Publication Number Publication Date
CA70308A true CA70308A (en) 1901-02-19

Family

ID=45186845

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000070308A Expired CA70308A (en) 1900-03-20 1900-03-20 Electrical semaphore system

Country Status (1)

Country Link
CA (1) CA70308A (en)

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