Geometrical instruments – Area integrators – Electrical
Patent
1978-04-21
1980-01-29
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
B43L 1320
Patent
active
041853920
ABSTRACT:
A drawing template for forming relatively large alphanumeric characters is comprised of a thin substrate in which a plurality of both linear and non-linear slots are formed. Lines drawn through selected ones of the slots form an outline of a desired character.
REFERENCES:
patent: 147942 (1874-02-01), Hutchinson
patent: 1369470 (1921-02-01), Rian
patent: 2229757 (1941-01-01), McEniry
BST Associates
Siegel Stephan
Stearns Richard R.
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