The LEFKO trademark was assigned a Serial Number #72299778 – by the United States Patent and Trademark Office (USPTO). Trademark Serial Number is a unique ID to identify the LEFKO mark in USPTO. The LEFKO mark is filed in the category of Chemicals. The legal correspondent for LEFKO trademark is ?, Domestic Representative - Not Found Prosecution History Date Description Proceeding Number Nov. 03, 1992 EXPIRED SEC. 9 Maintenance Filings or Post Registration Information Af . The current status of the LEFKO filing is This registration was not renewed and therefore has expired..
Based on LEFFINGWELL CHEMICAL COMPANY, the LEFKO trademark is used in the following business: CURING AGENTS FOR SYNTHETIC THERMOSETTING RESIN ADHESIVES.
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This registration was not renewed and therefore has expired.