Nancy A. Waletzko — 1 Patent at 3M

Nancy A. Waletzko has been granted 1 US patent while listed as an inventor at 3M. All of these patents were granted in 2001. Nancy A. Waletzko ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Nancy A. Waletzko in Zimmerman, MN, US.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6238794	Fade resistant black coating for roofing granules	Arthur H. Beesley, Christine A. Sobon, Bill L. George	2001-05-29	$25,266,000

Nancy A. Waletzko — 1 Patent

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