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John W. Erwin — 1 Patent

MCMcgard: 1 patents #30 of 46Top 70%
Orchard Park, NY: #176 of 275 inventorsTop 65%
New York: #67,828 of 115,490 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
John W. Erwin has been granted 1 US patent while listed as an inventor at Mcgard. All of these patents were granted in 1990. John W. Erwin ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list John W. Erwin in Orchard Park, NY, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4936336 Tamperproof construction for hydrant actuating nut Durham S. McCauley, John K. Waite 1990-06-26

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