| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 43 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Furniture and games | |
| #4 | Medical technology | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Vehicle wheels | |
| #3 | Hand carts | |
| #4 | Cycles | |
| #5 | Operating tables | |
| #6 | Office furniture | |
| #7 | Domestic washing | |
| #8 | Wheelchairs and sledges | |
| #9 | Gearing | |
| #10 | Cycle accessories |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roe Mayo E | 17 |
| #2 | Johnson Wilfred G | 9 |
| #3 | Forest Roe De | 6 |
| #4 | Johan Pehrsson Sven | 6 |
| #5 | Downing Joe R | 2 |
| #6 | Williams Leslie G | 1 |
| #7 | Johan Pehrsson | 1 |
| #8 | Lionel Chase | 1 |
| #9 | Libhart Anthony C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4246677A | Cart caster | |
| US3985208A | Wheel brake | |
| US3920260A | Cart shelf supporting structure | |
| US2007447A | Castering dolly | |
| US1856255A | Velocipede | |
| US2012683A | Velocipede | |
| US1831135A | Mop wringer | |
| US1958494A | Wheeled vehicle | |
| US1862546A | Detachable carrier for hand trucks | |
| US1912728A | Support for furniture | |
| US1979406A | Bag truck | |
| US1908783A | Truck platform | |
| US1887067A | Piano truck | |
| US1821642A | Caster | |
| US1829862A | Caster | |
| US1901377A | Buffer | |
| US1916850A | Hand truck | |
| US1821276A | Hand truck | |
| US1806084A | Tread | |
| US1753183A | Caster |