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CA407229A - Blackboard eraser - Google Patents

Blackboard eraser

Info

Publication number
CA407229A
CA407229A CA407229A CA407229DA CA407229A CA 407229 A CA407229 A CA 407229A CA 407229 A CA407229 A CA 407229A CA 407229D A CA407229D A CA 407229DA CA 407229 A CA407229 A CA 407229A
Authority
CA
Canada
Prior art keywords
blackboard eraser
eraser
blackboard
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
CA407229A
Other languages
French (fr)
Inventor
H. Oxley 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.)
AMERICAN CRAYON Co
Original Assignee
AMERICAN CRAYON Co
Publication date
Application granted granted Critical
Publication of CA407229A publication Critical patent/CA407229A/en
Expired legal-status Critical Current

Links

CA407229A Blackboard eraser Expired CA407229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA407229T

Publications (1)

Publication Number Publication Date
CA407229A true CA407229A (en) 1942-09-08

Family

ID=35418529

Family Applications (1)

Application Number Title Priority Date Filing Date
CA407229A Expired CA407229A (en) Blackboard eraser

Country Status (1)

Country Link
CA (1) CA407229A (en)

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