1983-02-07
1987-01-06
Corbin, John K.
G20B 2700
Patent
active
046342206
ABSTRACT:
Sheeting having images that are viewable within limited angles of viewing from the front of the sheeting are prepared from retroreflective sheeting or from sheeting patterned after retroreflective sheeting, i.e., sheeting having a monolayer of microlenses like the monolayer of microspheres in retroreflective sheeting. A layer of transparent material covers the back surface of the microlenses. Axial markings are disposed behind individual microlenses at the back of the layer of transparent material and the markings are viewable from the front of the sheeting as an image.
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Borgeson Frank A.
Bradshaw Thomas I.
Hockert Eric N.
Orensteen Bruce D.
Corbin John K.
Lemmo Vincent J.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
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