CA384059A - Dual tone telegraphy system - Google Patents

Dual tone telegraphy system

Info

Publication number
CA384059A
CA384059A CA384059A CA384059DA CA384059A CA 384059 A CA384059 A CA 384059A CA 384059 A CA384059 A CA 384059A CA 384059D A CA384059D A CA 384059DA CA 384059 A CA384059 A CA 384059A
Authority
CA
Canada
Prior art keywords
dual tone
telegraphy system
tone telegraphy
dual
tone
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
CA384059A
Other languages
French (fr)
Inventor
George Harold Finch William
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 CA384059A publication Critical patent/CA384059A/en
Expired legal-status Critical Current

Links

CA384059A Dual tone telegraphy system Expired CA384059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA384059T

Publications (1)

Publication Number Publication Date
CA384059A true CA384059A (en) 1939-09-19

Family

ID=35389289

Family Applications (1)

Application Number Title Priority Date Filing Date
CA384059A Expired CA384059A (en) Dual tone telegraphy system

Country Status (1)

Country Link
CA (1) CA384059A (en)

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