Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6607331 | Elevated crane support system and method for elevating a lifting apparatus | Paul Butler | 2003-08-19 |
| 5580189 | Jack-up rig crane | George Delamatyr, Avis Bourg | 1996-12-03 |
| 4428698 | Geotextile for pavement overlays | Jerry C. Murphy, Warren Stephen Harmon | 1984-01-31 |