| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 4 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Medical technology | |
| #2 | Machines | |
| #3 | Furniture and games | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Physical therapy devices | |
| #2 | Shaping of plastics | |
| #3 | Walking sticks | |
| #4 | Kitchen equipment | |
| #5 | Office furniture | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lien Howard C | 3 |
| #2 | Lien Howard Cameron | 2 |
| #3 | Smith Alfred A | 2 |
| #4 | Smith Alfred | 1 |
| #5 | Simonton Frank H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3517677A | Invalid walker | |
| GB1018529A | Friction crutch tip | |
| GB1012657A | Adjustable aluminium crutch | |
| GB977794A | Apparatus and method for making crutch pads | |
| GB996036A | Crutch pad and method of making the same | |
| US3274641A | Apparatus and method for making crutch pads | |
| US3269400A | Crutch pad | |
| GB937601A | Crutch tip | |
| GB874724A | Crutch tip | |
| US1409123A | Coffee-brewing apparatus | |
| CA717431A | Apparatus and method for making crutch pads |