RC

Roy Cooper

TR Tri-Tech: 2 patents #1 of 3Top 35%
📍 Bolton, CT: #1 of 1 inventorsTop 100%
Overall (1989): #17,357 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4884333 Method of making a stepper motor Charles Hansen 1989-12-05
4841189 Stepper motor and method of making the same Charles Hansen 1989-06-20