发明授权
US4117598A Drawing instrument or apparatus 失效
绘图仪器或仪器

Drawing instrument or apparatus
摘要:
A design drawing instrument for creating numerous decorative patterns and designs. The instrument includes a member having a circular groove therein, a guide or design plate having at least one guide track thereon, and a cursor having means for slidably engaging the circular groove and a holder for at least one marking instrument. By moving the cursor relative to the design plate in a prescribed manner, a pattern or design can be produced on a drawing surface.
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