ROSEN, GLOBAL INVESTOR COUNSEL, Encourages Investors of Liberty Oilfield Services Inc. to Contact the Firm Prior to the Important Deadline in First Filed Federal Suit Seeking Recovery of Investor Losses Commenced by the Firm

NEW YORK, May 3, 2020 /PRNewswire/ -- Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of Liberty Oilfield Services Inc. pursuant and/or traceable to the registration statement and related prospectus (collectively, the "Registration Statement")...

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