Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877525 | Pressurized vessel with false bottom and throughpipe coated at weld site | — | 1989-10-31 |
JC
John W. Chapman
Overall (1989): #96,185 of 140,708Top 70%
1
Patents 1989