Inventor
BARRICK TODD ANDREW
US4 patents
Patents
4 patentsUS12161894B1Dec 10, 2024
Respirator test system
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US12564741B1Mar 3, 2026
Respirator test system
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US12436024B1Oct 7, 2025
Compact convertible universal single pass/double pass optical system
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US12364883B2Jul 22, 2025
Reusable filtering face mask
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