A World-Wide Blackboard
INTERNATIONAL JOURNAL OF COMPUTERS AND APPLICATIONS ; 21 , 1 ; 19-24
1999-01-01
6 pages
Aufsatz (Zeitschrift)
Englisch
DDC: | 004.16 |
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Wheel assembly for moving blackboard and blackboard assembly including the same
Europäisches Patentamt | 2023
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