Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805420 | Cryogenic vessel for cooling electronic components | Warren W. Porter | 1989-02-21 |
DL
Donald K. Lauffer
Overall (1989): #119,398 of 140,708Top 85%
1
Patents 1989