CA915426A - Test grading device - Google Patents

Test grading device

Info

Publication number
CA915426A
CA915426A CA915426A CA915426DA CA915426A CA 915426 A CA915426 A CA 915426A CA 915426 A CA915426 A CA 915426A CA 915426D A CA915426D A CA 915426DA CA 915426 A CA915426 A CA 915426A
Authority
CA
Canada
Prior art keywords
grading device
test grading
test
grading
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
CA915426A
Inventor
L. Roche John
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA915426A publication Critical patent/CA915426A/en
Expired legal-status Critical Current

Links

CA915426A Test grading device Expired CA915426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA915426T

Publications (1)

Publication Number Publication Date
CA915426A true CA915426A (en) 1972-11-28

Family

ID=36422906

Family Applications (1)

Application Number Title Priority Date Filing Date
CA915426A Expired CA915426A (en) Test grading device

Country Status (1)

Country Link
CA (1) CA915426A (en)

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