Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649492 | Tube expansion process | Susanta Sinha, Philip Simon Brown, Douglas G. Harman, Harold T. Keller, deceased, Wenche W. Cheng | 1987-03-10 |
| 4649493 | Tube expansion apparatus | Raymond P. Castner, Philip Simon Brown, Susanta Sinha, Harold T. Keller, deceased, Wenche W. Cheng | 1987-03-10 |