DC

David Christensen

NP North American Philips: 1 patents #3 of 19Top 20%
🗺 Wisconsin: #153 of 927 inventorsTop 20%
Overall (1982): #70,994 of 81,411Top 90%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4365130 Vented membrane switch with contaminant scavenger — 1982-12-21