G - Physics – 02 – B
Patent
G - Physics
02
B
42/8, 88/113.18
G02B 5/128 (2006.01) G06K 19/06 (2006.01) G06K 19/08 (2006.01) G06K 19/14 (2006.01) G07F 7/08 (2006.01)
Patent
CA 1273835
Abstract of the Disclosure Retroreflective sheeting comprising a monolayer of transparent glass microspheres partially embedded in a binder layer, a specularly reflective layer covering the back surfaces of the microspheres, and layer-formed images viewable only within a limited conical field of view, the images being provided by tiny ellipsoidal cavities in the microspheres, each opening through a back surface of the microsphere.
486301
Bradshaw Thomas I.
Orensteen Bruce D.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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