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Walter L. Snead
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Columbus, OH, US
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Patents Grants
last 30 patents
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Patent Grant
Thermochromatic reflective pavement markers for indicating changing...
Patent number
11,203,846
Issue date
Dec 21, 2021
Walter L. Snead
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Patents Applications
last 30 patents
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Patent Application
THERMOCHROMATIC REFLECTIVE PAVEMENT MARKERS FOR INDICATING CHANGING...
Publication number
20190017235
Publication date
Jan 17, 2019
Walter L. Snead
G02 - OPTICS