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John Spangler

RS Radio Systems: 1 patents #8 of 27Top 30%
📍 Knoxville, TN: #73 of 310 inventorsTop 25%
🗺 Tennessee: #487 of 1,835 inventorsTop 30%
Overall (2025): #332,250 of 469,880Top 75%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D1080915 Pet door Nicholas Renecle, Kevin Zinn 2025-06-24