CA59894A - Signal for telephone switchboards - Google Patents

Signal for telephone switchboards

Info

Publication number
CA59894A
CA59894A CA000059894A CA59894DA CA59894A CA 59894 A CA59894 A CA 59894A CA 000059894 A CA000059894 A CA 000059894A CA 59894D A CA59894D A CA 59894DA CA 59894 A CA59894 A CA 59894A
Authority
CA
Canada
Prior art keywords
signal
telephone switchboards
switchboards
telephone
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
CA000059894A
Other languages
French (fr)
Inventor
Frank Robert Mcberty
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.)
Bell Telephone Company of Canada
Original Assignee
Bell Telephone Company of Canada
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 Bell Telephone Company of Canada filed Critical Bell Telephone Company of Canada
Application granted granted Critical
Publication of CA59894A publication Critical patent/CA59894A/en
Expired legal-status Critical Current

Links

CA000059894A 1897-01-05 1897-01-05 Signal for telephone switchboards Expired CA59894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA59894T 1897-01-05

Publications (1)

Publication Number Publication Date
CA59894A true CA59894A (en) 1898-05-06

Family

ID=45176432

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000059894A Expired CA59894A (en) 1897-01-05 1897-01-05 Signal for telephone switchboards

Country Status (1)

Country Link
CA (1) CA59894A (en)

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