CA18706A - Appareil a signal de telephone - Google Patents

Appareil a signal de telephone

Info

Publication number
CA18706A
CA18706A CA000018706A CA18706DA CA18706A CA 18706 A CA18706 A CA 18706A CA 000018706 A CA000018706 A CA 000018706A CA 18706D A CA18706D A CA 18706DA CA 18706 A CA18706 A CA 18706A
Authority
CA
Canada
Prior art keywords
signalling apparatus
telephone signalling
telephone
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
CA000018706A
Other languages
English (en)
Inventor
F. Benedict Herzog
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 CA18706A publication Critical patent/CA18706A/fr
Expired legal-status Critical Current

Links

CA000018706A Appareil a signal de telephone Expired CA18706A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA18706T

Publications (1)

Publication Number Publication Date
CA18706A true CA18706A (fr) 1884-02-18

Family

ID=45135249

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000018706A Expired CA18706A (fr) Appareil a signal de telephone

Country Status (1)

Country Link
CA (1) CA18706A (fr)

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