Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4363411 | Hammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight means | Gilbert Blair, Richard Collins | 1982-12-14 | $1,680,000 |