| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 2 | |
| #3 | Austria | 1 | |
| #4 | Australia | 1 | |
| #5 | Germany | 1 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Cycles | |
| #2 | Wheelchairs and sledges | |
| #3 | Hand carts | |
| #4 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zenser Darwin | 5 |
| #2 | Callaway Mel | 3 |
| #3 | Bowers Michael R | 1 |
| #4 | Bowers M | 1 |
| #5 | Knapp Ronald Ralph | 1 |
| #6 | Zenser D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3982597A | Snowmobile ski dampener arrangement | |
| US3964765A | Bicycle | |
| US3931990A | Bicycle | |
| KR790001704B1 | Damping blcycle | |
| US3884314A | Snowmobile ski suspension system | |
| US3865402A | Bicycle | |
| US3856099A | Snowmobile adjustable suspension | |
| US3884316A | Motorcycle transmission |