U.S. federal trademark · Serial No. 78672593
Refrigeration units comprising a closed-cycle system namely a Gifford McMahon, pulse tubes, mixed refrigerant heat exchangers and expanders, compressors, cryostats, and gas transfer lines for cryogenic use; portable mechanical refrigeration chillers capable of supplying liquid coolant, and refrigeration gas chillers all the aforesaid goods -- all the aforesaid goods for use in cryogenic refrigeration at temperatures less than 160k
Water vapor pumps for use in cryogenic refrigeration at temperatures less than 160k
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