DP

David G. Perkins

WA Welch Allyn: 30 patents #20 of 552Top 4%
RL Raychem Limited: 1 patents #486 of 928Top 55%
📍 Tully, NY: #1 of 35 inventorsTop 3%
🗺 New York: #3,824 of 115,490 inventorsTop 4%
Overall (All Time): #115,665 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
6007204 Compact ocular measuring system Corinn C. Fahrenkrug, Ervin Goldfain, Andrew Kugler, Howard Haines, William N. Cuipylo 1999-12-28
5919130 Video otoscope Richard A. Monroe, Robert J. Wood 1999-07-06
5588856 Sealing member and methods of sealing Mary A. Collins, Harry E. White 1996-12-31
5202710 Fixation card attachment for retinoscope 1993-04-13
5200772 Filter apparatus for retinoscope Richard A. Monroe 1993-04-06
5189449 Retinoscope with external control sleeve 1993-02-23