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DRILLING SPECIALTIES COMPANY, Original Registrant CHEVRON PHILLIPS CHEMICAL COMPANY LP, Subsequent Owner After Registration PHILLIPS PETROLEUM COMPANY, Subsequent Owner After Registration

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DRISPAC

72202425 | Trademark

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Filed Sept. 23, 1964

Serial No. 72202425

Registered Sept. 6, 1966

Registration No. 814,214

Class DRILLING MUD ADDITIVE-NAMELY, A POLYANIONIC CELLULOSE DERIVATIVE TO CONTROL VISCOSITY AND GEL STRENGTH; 001

Status The registration has been renewed.

Last Updated: 5 years, 1 month ago

Filing Date	#	Docket Text
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72202425 | Trademark

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