| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Australia | 2 | |
| #4 | Canada | 2 | |
| #5 | France | 2 | |
| #6 | Belgium | 1 | |
| #7 | Brazil | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Cranes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Davies William | 9 |
| #2 | Renfroe Charles J | 5 |
| #3 | Renfroe Raymond L | 1 |
| #4 | Renfroe C J | 1 |
| #5 | Davis William | 1 |
| #6 | Renfroe C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5255950A | Clamp with freely rotatable coupling and associated method of rotatably manipulating a structural member | |
| EP0463838A1 | Lifting clamp | |
| US4492401A | Non-marring lifting clamp | |
| US4498699A | Lifting clamp locking mechanism with push button release handle | |
| US4162804A | Lifting clamp | |
| US4183571A | Screw-type lifting clamp | |
| CA799338A | Safety clamp |