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CA636805A - Sound controlling or moderating device - Google Patents

Sound controlling or moderating device

Info

Publication number
CA636805A
CA636805A CA636805A CA636805DA CA636805A CA 636805 A CA636805 A CA 636805A CA 636805 A CA636805 A CA 636805A CA 636805D A CA636805D A CA 636805DA CA 636805 A CA636805 A CA 636805A
Authority
CA
Canada
Prior art keywords
sound controlling
moderating device
moderating
sound
controlling
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
CA636805A
Inventor
F. C. Devlin William
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 CA636805A publication Critical patent/CA636805A/en
Expired legal-status Critical Current

Links

CA636805A Sound controlling or moderating device Expired CA636805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA636805T

Publications (1)

Publication Number Publication Date
CA636805A true CA636805A (en) 1962-02-20

Family

ID=35915311

Family Applications (1)

Application Number Title Priority Date Filing Date
CA636805A Expired CA636805A (en) Sound controlling or moderating device

Country Status (1)

Country Link
CA (1) CA636805A (en)

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