Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876779 | Apparatus and method for manufacturing plate fin coils of different configurations | — | 1989-10-31 |
| 4858296 | Method for tension expanding tubes | — | 1989-08-22 |
| 4858305 | Single station tension hairpin tube expander | Michael L. McDonough, Bruce J. Poplawski, Daniel P. Gaffaney, Ross A. Moyer | 1989-08-22 |
| 4843860 | Two stage impact beller | — | 1989-07-04 |
| 4815185 | Method for belling and expanding coils | — | 1989-03-28 |