| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Chemical engineering | |
| #5 | Machine tools | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Mixing | |
| #5 | Gearing | |
| #6 | Domestic plumbing installations | |
| #7 | Sawing | |
| #8 | Office furniture | |
| #9 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walker Willard R | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2893408A | Dish washers | |
| US2127017A | Dishwasher | |
| US1853589A | Dishwashing machine | |
| US1696464A | Culinary fixture | |
| US1724383A | Mechanical dishwasher | |
| US1259939A | Dish-washer. | |
| US1244446A | Mechanical dish-washer. | |
| US1158409A | Mechanical motor for dish-washing machines. | |
| US1114948A | Swinging shelf. | |
| US1070562A | Dish-washer. | |
| US1070561A | Broaching-die. | |
| US761274A | Nut and bolt lock. |