CA490880A - Noise-suppressing apparatus - Google Patents

Noise-suppressing apparatus

Info

Publication number
CA490880A
CA490880A CA490880A CA490880DA CA490880A CA 490880 A CA490880 A CA 490880A CA 490880 A CA490880 A CA 490880A CA 490880D A CA490880D A CA 490880DA CA 490880 A CA490880 A CA 490880A
Authority
CA
Canada
Prior art keywords
noise
suppressing apparatus
suppressing
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
CA490880A
Other languages
French (fr)
Inventor
J. W. Cullum Douglas
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 CA490880A publication Critical patent/CA490880A/en
Expired legal-status Critical Current

Links

CA490880A Noise-suppressing apparatus Expired CA490880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA490880T

Publications (1)

Publication Number Publication Date
CA490880A true CA490880A (en) 1953-03-03

Family

ID=35630618

Family Applications (1)

Application Number Title Priority Date Filing Date
CA490880A Expired CA490880A (en) Noise-suppressing apparatus

Country Status (1)

Country Link
CA (1) CA490880A (en)

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