CA2004A - Duplex telegraph - Google Patents

Duplex telegraph

Info

Publication number
CA2004A
CA2004A CA000002004A CA2004DA CA2004A CA 2004 A CA2004 A CA 2004A CA 000002004 A CA000002004 A CA 000002004A CA 2004D A CA2004D A CA 2004DA CA 2004 A CA2004 A CA 2004A
Authority
CA
Canada
Prior art keywords
duplex telegraph
telegraph
duplex
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
CA000002004A
Other languages
French (fr)
Inventor
Joseph B. Stearns
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 CA2004A publication Critical patent/CA2004A/en
Expired legal-status Critical Current

Links

CA000002004A Duplex telegraph Expired CA2004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2004T

Publications (1)

Publication Number Publication Date
CA2004A true CA2004A (en) 1873-01-25

Family

ID=45118573

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000002004A Expired CA2004A (en) Duplex telegraph

Country Status (1)

Country Link
CA (1) CA2004A (en)

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