Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869883 | Inert gas purifier for bulk nitrogen without the use of hydrogen or other reducing gases | Robert M. Thorogood | 1989-09-26 |
WK
William T. Kleinberg
Overall (1989): #43,902 of 140,708Top 35%
1
Patents 1989