U.S. federal trademark · Serial No. 87172004 · Reg. No. 5478301
Apparatus for testing tribological properties of gas, liquids and solids, namely, machines for testing the tribological properties of fuels, refined oils and lubricants, medical laboratory research instruments for testing the tribological properties of fuels, refined oils and lubricants, scientific instrumentation for measuring the tribological quality of fuels, refined oils and lubricants, resistance measuring instruments, surface roughness testing machines and instruments
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