CA624902A - Device for protecting ears from noise - Google Patents

Device for protecting ears from noise

Info

Publication number
CA624902A
CA624902A CA624902A CA624902DA CA624902A CA 624902 A CA624902 A CA 624902A CA 624902 A CA624902 A CA 624902A CA 624902D A CA624902D A CA 624902DA CA 624902 A CA624902 A CA 624902A
Authority
CA
Canada
Prior art keywords
noise
protecting ears
ears
protecting
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
CA624902A
Inventor
R. Barnett Herbert
R. Hornickel Robert
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.)
MSA Safety Inc
Original Assignee
Mine Safety Appliances Co
Publication date
Application granted granted Critical
Publication of CA624902A publication Critical patent/CA624902A/en
Expired legal-status Critical Current

Links

CA624902A Device for protecting ears from noise Expired CA624902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA624902T

Publications (1)

Publication Number Publication Date
CA624902A true CA624902A (en) 1961-08-01

Family

ID=35880078

Family Applications (1)

Application Number Title Priority Date Filing Date
CA624902A Expired CA624902A (en) Device for protecting ears from noise

Country Status (1)

Country Link
CA (1) CA624902A (en)

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