Device for assisting the marking of tests

Details Device for assisting the marking of tests Device for assisting the marking of tests

1977-09-12

1979-09-11

Grieb, William H.

35 31R, 35 31G, 35 48A, G09B 304

Patent

active

041670698

ABSTRACT:
A mask with apertures is provided for use with a question or problem sheet having questions or problems in defined areas of the sheet, and answers outside such area. The mask is designed to hold such sheet in registration, revealing the defined areas and occluding the areas with the answers.

REFERENCES:
patent: 1641982 (1927-09-01), McDade
patent: 2693646 (1954-11-01), Hawkins
patent: 3152403 (1964-10-01), Betz
patent: 3362088 (1968-01-01), Kusch
patent: 3410002 (1968-11-01), Mulholland et al.
patent: 3526974 (1970-09-01), Van Derveer et al.

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