CA421940A - Sound-absorbing material - Google Patents

Sound-absorbing material

Info

Publication number
CA421940A
CA421940A CA421940A CA421940DA CA421940A CA 421940 A CA421940 A CA 421940A CA 421940 A CA421940 A CA 421940A CA 421940D A CA421940D A CA 421940DA CA 421940 A CA421940 A CA 421940A
Authority
CA
Canada
Prior art keywords
sound
absorbing material
absorbing
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
CA421940A
Other languages
French (fr)
Inventor
D. King 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.)
Canadian Gypsum Co Ltd
United States Gypsum Co
Original Assignee
Canadian Gypsum Co Ltd
United States Gypsum Co
Publication date
Application granted granted Critical
Publication of CA421940A publication Critical patent/CA421940A/en
Expired legal-status Critical Current

Links

CA421940A Sound-absorbing material Expired CA421940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA421940T

Publications (1)

Publication Number Publication Date
CA421940A true CA421940A (en) 1944-08-08

Family

ID=35532926

Family Applications (1)

Application Number Title Priority Date Filing Date
CA421940A Expired CA421940A (en) Sound-absorbing material

Country Status (1)

Country Link
CA (1) CA421940A (en)

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