Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877676 | Hot melt ink transparency | Steven F. Fulton, Paul A. Hoisington, Bruce A. Paulson, Robert R. Schaffer, Charles W. Spehrley, Jr. | 1989-10-31 |
| 4864330 | Method of forming a hot melt ink unit | Charles W. Spehrley, Jr., Nathan P. Hine, Dean H. Cranston, Jack B. MacDonald | 1989-09-05 |
| 4801473 | Method for preparing a hot melt ink transparency | Steven F. Fulton, Paul A. Hoisington, Bruce A. Paulson, Robert R. Schaffer, Charles W. Spehrley, Jr. | 1989-01-31 |