Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4373967 | Process for making resulfurized machinable steel | Charles R. Roper, Jr., John K. Strattan, Austin J. Hiller | 1983-02-15 |
| 4198249 | Steel substrate for glassing | Charles R. Roper, Jr. | 1980-04-15 |