Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6254154 | Hole digging tool | Richard W. Herzfeld | 2001-07-03 |
| 4975041 | Die assembly for die casting a propeller structure | Steven L. Fries | 1990-12-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6254154 | Hole digging tool | Richard W. Herzfeld | 2001-07-03 |
| 4975041 | Die assembly for die casting a propeller structure | Steven L. Fries | 1990-12-04 |