U.S. federal trademark · Serial No. 85881217 · Reg. No. 4539721
a feature of gaseous permeation testing instruments for providing a gas tight seal between the testing material and the instrument, namely, a nitrogen flush ring in the nature of a peripheral channel in fluid communication with a source of nitrogen flushing gas sold as an integral component of gaseous permeation testing instruments
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.