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Application October 2, 1957 Serial No. 687,619 8 Claims. (Cl. 162-168) The present invention relates to paper of substantially improved dry strength but substantially unimproved wet strength and includes the treated cellulose fibers themselves, with and without applied sizing material, and water-laid fibrous cellulosic webs prepared therefrom such as paper board, shaped pulp articles and the like.
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