Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751944 | Duplex mechanical tube plug | Robert F. Keating, Lawrence A. Nelson | 1988-06-21 |
| 4649492 | Tube expansion process | Philip Simon Brown, Douglas G. Harman, Harold T. Keller, deceased, David F. Olechovsky, Wenche W. Cheng | 1987-03-10 |
| 4649493 | Tube expansion apparatus | Raymond P. Castner, David F. Olechovsky, Philip Simon Brown, Harold T. Keller, deceased, Wenche W. Cheng | 1987-03-10 |