OIL CHECK
Mark Identification

OIL CHECK

Serial Number

73281501

Filing Date

Oct 14, 1980

Trademark by

MINNESOTA VALLEY TESTING LABORATORIESINC.

Classification Information

SERVICE OF DETERMINING THE CONTENTS OF OIL AFTER ITS USE, TO DETERMINE ORGANIC AND INORGANIC BY-PRODUCTS OF IT AFTER ITS USE IN MACHINERY

Treatment of Materials