PL

Peter S. Leonard

3M: 1 patents #276 of 881Top 35%
📍 Middridge, GB: #1 of 4 inventorsTop 25%
Overall (2025): #254,857 of 469,880Top 55%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12245648 Maintenance-free respirator that has concave portions on opposing sides of mask top section John M. Facer, Christopher P. Henderson, Desmond T. Curran 2025-03-11