U.S. Silica's SandBox Unit Scores Another Win At the Patent Office on Key Patent Claims
"We are very pleased that the Patent Office has once again confirmed key claims in our patent portfolio,'' said
About
Michael Lawson
Vice President of Investor Relations and Corporate Communications
(301) 682-0304
lawsonm@ussilica.com
Investor Relations Manager
281-394-9630
shavern@ussilica.com
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