US Patent Issued to 3M Innovative Properties on Sept. 23 for "Welding attachment for a respirator" (Minnesota, Wisconsin Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. D1,094,903, issued on Sept. 23, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Welding attachment for a respirator" was invented by John M. Pilgrim (Woodbury, Minn.), David M. Castiglione (Hudson, Wis.) and Jacob P. Vanderheyden (St. Paul, Minn.).

The patent was filed on Feb. 3, 2023, under Application No. D/870,746.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=D1094903&OS=D1094903&RS=D1094903

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