DO

Darrell P. Ophaug

SD Square D: 4 patents #126 of 756Top 20%
Overall (All Time): #1,283,006 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5910757 Phase barrier for use in a multiphase circuit breaker William J. Broghammer, Richard W. Niccolls 1999-06-08
5005880 Self-sealing snap-in receptacle, especially for circuit breaker cover retention Peter D. Raine 1991-04-09
4921083 Clutch module with predetermined torque Ronald J. Etscheidt 1990-05-01
4912380 Field installable electrical operator for a circuit breaker Henry J. Zylstra, Ronald J. Etscheidt 1990-03-27