CA43303A - Telephone acoustique - Google Patents

Telephone acoustique

Info

Publication number
CA43303A
CA43303A CA000043303A CA43303DA CA43303A CA 43303 A CA43303 A CA 43303A CA 000043303 A CA000043303 A CA 000043303A CA 43303D A CA43303D A CA 43303DA CA 43303 A CA43303 A CA 43303A
Authority
CA
Canada
Prior art keywords
acoustic telephone
acoustic
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
CA000043303A
Other languages
English (en)
Inventor
Alfred L. Simpson
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 CA43303A publication Critical patent/CA43303A/fr
Expired legal-status Critical Current

Links

CA000043303A Telephone acoustique Expired CA43303A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA43303T

Publications (1)

Publication Number Publication Date
CA43303A true CA43303A (fr) 1893-06-21

Family

ID=45159843

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000043303A Expired CA43303A (fr) Telephone acoustique

Country Status (1)

Country Link
CA (1) CA43303A (fr)

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