William Hardcastle

📍 Mendota Heights, MN: #5 of 17 inventorsTop 30%

🗺 Minnesota: #1,731 of 5,562 inventorsTop 35%

Overall (2025): #146,589 of 469,880Top 35%

Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
12365429	Nose plug for underwater diving	—	2025-07-22