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John D. Spencer

PL Pandrol Limited: 1 patents #1 of 8Top 15%
📍 Allendale, MI: #5 of 12 inventorsTop 45%
🗺 Michigan: #3,136 of 9,501 inventorsTop 35%
Overall (2023): #383,234 of 537,848Top 75%
1
Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11753774 Anchoring device for a railway rail fastening assembly John Phillip Porrill, Stephen John Cox, Brenton Keast, Steven Harkness, Chris Lea 2023-09-12