Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D330045 | Combined portable holder for artist's material and display cover therefor | Charles W. Dietterich, Leonard Spitzer, Gregory C. Yehl | 1992-10-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D330045 | Combined portable holder for artist's material and display cover therefor | Charles W. Dietterich, Leonard Spitzer, Gregory C. Yehl | 1992-10-06 |