CA197843A - Dispositif d'acoustique - Google Patents

Dispositif d'acoustique

Info

Publication number
CA197843A
CA197843A CA197843A CA197843DA CA197843A CA 197843 A CA197843 A CA 197843A CA 197843 A CA197843 A CA 197843A CA 197843D A CA197843D A CA 197843DA CA 197843 A CA197843 A CA 197843A
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
CA197843A
Other languages
English (en)
Inventor
B. Burch George
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 CA197843A publication Critical patent/CA197843A/fr
Expired legal-status Critical Current

Links

CA197843A Dispositif d'acoustique Expired CA197843A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA197843T

Publications (1)

Publication Number Publication Date
CA197843A true CA197843A (fr) 1920-03-02

Family

ID=35072281

Family Applications (1)

Application Number Title Priority Date Filing Date
CA197843A Expired CA197843A (fr) Dispositif d'acoustique

Country Status (1)

Country Link
CA (1) CA197843A (fr)

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