U.S. federal trademark · Serial No. 71660877 · Reg. No. 0597804
OILY LIQUID PENETRANTS CONTAINING DYES DISSOLVED THEREIN, EMULSIFIERS FOR RENDERING THE LIQUID PENETRANTS WATER WASHABLE, AND DEVELOPING POWDERS FOR APPLICATION EITHER DRY OR ADMIXTURE WITH A LIQUID TO AID IN LOCATING SURFACE FLAWS AND THE EXTENT THEREOF IN ARTICLES TO BE TESTED
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