Overhead projection highlighting device and method of use

Details Overhead projection highlighting device and method of use Overhead projection highlighting device and method of use

1989-06-02

1991-05-07

Haroian, Harry N.

Optics: image projectors

Miscellaneous

353DIG5, 353121, 353 42, G03B 2164

Patent

active

050131494

ABSTRACT:
A highlighting device and method of use for focusing audience attention on an overhead projection is disclosed whereby a generally flat color tinted and light transmissive body having upper and lower surfaces with an optional handle and feet is employed as a register/highlighter for aligning and emphasizing an information transparency sheet.

REFERENCES:
patent: 2593914 (1952-04-01), Palitto
patent: 2841888 (1958-07-01), Grimmer
patent: 3342101 (1967-09-01), Zollner
patent: 3912360 (1975-10-01), Beckel
patent: 3998535 (1976-12-01), Clarke
patent: 4632529 (1986-12-01), Levin

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