Drawing board

Details Drawing board Drawing board

1977-11-30

1979-02-13

Haroian, Harry N.

Geometrical instruments

Scriber

Curved line

33DIG1, B43I 1302, B43I 702

Patent

active

041388186

ABSTRACT:
Drawing board having a clamping bar to hold a sheet of paper in place and having two magnetic portions inclined to one another.

REFERENCES:
patent: 3222087 (1965-12-01), Keenan
patent: 3589016 (1971-06-01), Hebel

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