CA34747A - Aural attachement for telephone receivers - Google Patents

Aural attachement for telephone receivers

Info

Publication number
CA34747A
CA34747A CA000034747A CA34747DA CA34747A CA 34747 A CA34747 A CA 34747A CA 000034747 A CA000034747 A CA 000034747A CA 34747D A CA34747D A CA 34747DA CA 34747 A CA34747 A CA 34747A
Authority
CA
Canada
Prior art keywords
attachement
aural
telephone receivers
receivers
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
CA000034747A
Other languages
French (fr)
Inventor
Frank Caverhill
Edwin C. Hess
Frank S. Harrison
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 CA34747A publication Critical patent/CA34747A/en
Expired legal-status Critical Current

Links

CA000034747A Aural attachement for telephone receivers Expired CA34747A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA34747T

Publications (1)

Publication Number Publication Date
CA34747A true CA34747A (en) 1890-07-21

Family

ID=45151287

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000034747A Expired CA34747A (en) Aural attachement for telephone receivers

Country Status (1)

Country Link
CA (1) CA34747A (en)

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