CM

Charles L. McKenna

📍 Gerber, CA: #1 of 2 inventorsTop 50%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,278,341 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5511544 Non-resistant respiratory exerciser G. David Swanson 1996-04-30
5255687 Zero dead space respiratory exercise valve — 1993-10-26