Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859159 | Spiral compressor with setback portion on radially outer peripheral wall | — | 1989-08-22 |
HL
Helmut Leptien
Overall (1989): #106,575 of 140,708Top 80%
1
Patents 1989