CA218675A - Acoustic device - Google Patents

Acoustic device

Info

Publication number
CA218675A
CA218675A CA218675A CA218675DA CA218675A CA 218675 A CA218675 A CA 218675A CA 218675 A CA218675 A CA 218675A CA 218675D A CA218675D A CA 218675DA CA 218675 A CA218675 A CA 218675A
Authority
CA
Canada
Prior art keywords
acoustic device
acoustic
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
CA218675A
Other languages
French (fr)
Inventor
R. Moore Charles
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.)
INTERNATIONAL WESTERN ELECTRIC Co
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA218675A publication Critical patent/CA218675A/en
Expired legal-status Critical Current

Links

CA218675A Acoustic device Expired CA218675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA218675T

Publications (1)

Publication Number Publication Date
CA218675A true CA218675A (en) 1922-05-16

Family

ID=35113119

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218675A Expired CA218675A (en) Acoustic device

Country Status (1)

Country Link
CA (1) CA218675A (en)

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