Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363411 | Hammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight means | Gilbert Blair, Richard Collins | 1982-12-14 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363411 | Hammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight means | Gilbert Blair, Richard Collins | 1982-12-14 |