| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Furniture and games | |
| #3 | Transport | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Skates | |
| #2 | Unspecified technologies | |
| #3 | Vehicle wheels | |
| #4 | Producing goods from plastic | |
| #5 | Vehicle parts | |
| #6 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schmidt Erwin J | 8 |
| #2 | Kaptuller Alexander F | 4 |
| #3 | Grange Edward A | 4 |
| #4 | Andersson Sture R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2261465A | Method of making wheels with rubberlike treads | |
| US2122066A | Roller skate | |
| US2152685A | Wheel | |
| US2152684A | Wheel | |
| US2100542A | Wheel with rubber-like tread | |
| US2086557A | Roller skate | |
| US2079185A | Roller skate | |
| US2038005A | Roller skate | |
| US2044405A | Antifriction bearing | |
| US2089986A | Wheel with rubber-like tread and method of making same |