Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348970 | Self-oiling portable bag-closing sewing machine | Robert J. Robinson, Verdell H. Schroeder | 1982-09-14 |
| 4278134 | Implement for smoothing particulate material surfaces | — | 1981-07-14 |