DS

David A. Schaefer

📍 Grand Island, NY: #12 of 33 inventorsTop 40%
🗺 New York: #1,860 of 7,004 inventorsTop 30%
Overall (1994): #144,070 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5299841 Safety flow restrictor for expansion joints — 1994-04-05