CA624693A - Yieldable barriers - Google Patents

Yieldable barriers

Info

Publication number
CA624693A
CA624693A CA624693A CA624693DA CA624693A CA 624693 A CA624693 A CA 624693A CA 624693 A CA624693 A CA 624693A CA 624693D A CA624693D A CA 624693DA CA 624693 A CA624693 A CA 624693A
Authority
CA
Canada
Prior art keywords
yieldable
barriers
yieldable barriers
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
CA624693A
Inventor
D. Sawyer Emerson
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 CA624693A publication Critical patent/CA624693A/en
Expired legal-status Critical Current

Links

CA624693A Yieldable barriers Expired CA624693A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA624693T

Publications (1)

Publication Number Publication Date
CA624693A true CA624693A (en) 1961-08-01

Family

ID=35879869

Family Applications (1)

Application Number Title Priority Date Filing Date
CA624693A Expired CA624693A (en) Yieldable barriers

Country Status (1)

Country Link
CA (1) CA624693A (en)

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