CLEAN DUCT (U.S. Trademark Serial Number 87603561) is a United States trademark of Gray Flex Systems, Inc.. The goods and services include: Non-metal ventilating ducts Ventilating ducts of metal “DUCT”. The correspondent is Kimberly I. Shimomura of HARTER SECREST & EMERY LLP. This trademark was filed on September 11, 2017 as United States Trademark Application…
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