CA553207A - Dispositif protecteur d'oreille - Google Patents

Dispositif protecteur d'oreille

Info

Publication number
CA553207A
CA553207A CA553207DA CA553207A CA 553207 A CA553207 A CA 553207A CA 553207D A CA553207D A CA 553207DA CA 553207 A CA553207 A CA 553207A
Authority
CA
Canada
Prior art keywords
ear defender
defender
ear
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
Other languages
English (en)
Inventor
A. G. Shaw Edgar
J. Thiessen 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.)
National Research Council of Canada
Original Assignee
National Research Council of Canada
Publication date
Application granted granted Critical
Publication of CA553207A publication Critical patent/CA553207A/fr
Expired legal-status Critical Current

Links

CA553207D Dispositif protecteur d'oreille Expired CA553207A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA553207T

Publications (1)

Publication Number Publication Date
CA553207A true CA553207A (fr) 1958-02-11

Family

ID=35714613

Family Applications (1)

Application Number Title Priority Date Filing Date
CA553207D Expired CA553207A (fr) Dispositif protecteur d'oreille

Country Status (1)

Country Link
CA (1) CA553207A (fr)

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