CA293935A - Machine for cleaning blackboard erasers - Google Patents

Machine for cleaning blackboard erasers

Info

Publication number
CA293935A
CA293935A CA293935A CA293935DA CA293935A CA 293935 A CA293935 A CA 293935A CA 293935 A CA293935 A CA 293935A CA 293935D A CA293935D A CA 293935DA CA 293935 A CA293935 A CA 293935A
Authority
CA
Canada
Prior art keywords
machine
cleaning blackboard
blackboard erasers
erasers
cleaning
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
CA293935A
Other languages
French (fr)
Inventor
Krypiakevich Michael
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 CA293935A publication Critical patent/CA293935A/en
Expired legal-status Critical Current

Links

CA293935A Machine for cleaning blackboard erasers Expired CA293935A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA293935T

Publications (1)

Publication Number Publication Date
CA293935A true CA293935A (en) 1929-10-15

Family

ID=35231253

Family Applications (1)

Application Number Title Priority Date Filing Date
CA293935A Expired CA293935A (en) Machine for cleaning blackboard erasers

Country Status (1)

Country Link
CA (1) CA293935A (en)

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