WF

William Fredrick

Overall (All Time): #1,671,878 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4873616 Power supply for arc lamps Robert G. Brent, Peter Baldwin 1989-10-10
4873617 Power supply for arc lamps Robert G. Brent, Peter Baldwain 1989-10-10
4873618 Power supply for D.C. arc lamps Robert G. Brent, Peter Baldwin 1989-10-10