Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869065 | Single spool selector valve for simultaneous pump displacement and motor direction control in hydrostatic drive | — | 1989-09-26 |
DH
Delaney C. Hopkins
Overall (1989): #120,905 of 140,708Top 90%
1
Patents 1989