Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4386924 | Handle bag making apparatus | Donald C. Crawford | 1983-06-07 |
| 4235329 | Article grouping and tiering apparatus | Donald C. Crawford | 1980-11-25 |
| 4231558 | Apparatus for accumulating articles such as bags | Donald C. Crawford | 1980-11-04 |
| 4197935 | Automatic feeding of spaced articles to a processing machine | Donald C. Crawford | 1980-04-15 |