Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4224504 | Apparatus for practicing temperature gradient zone melting | Carl A. Erikson, Thomas R. Anthony, Harvey E. Cline, Siegwalt Ludke | 1980-09-23 |
| 4221956 | Apparatus for practising temperature gradient zone melting | Carl A. Erikson, Thomas R. Anthony, Harvey E. Cline, Siegwalt Ludke | 1980-09-09 |