DS

David R. Schlaefer

3M: 2 patents #5,326 of 11,543Top 50%
📍 Singapore, SG: #4,165 of 13,971 inventorsTop 30%
Overall (All Time): #2,198,273 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D469580 Red helmet respiratory protection device M. Antonia Sáez 2003-01-28
D436234 Green helmet respiratory protection device M. Antonia Sáez 2001-01-09