| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 4 | |
| #3 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Consumer goods | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Laundering textiles | |
| #3 | Clutches and brakes | |
| #4 | Unspecified technologies | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walker Willard R | 11 |
| #2 | Walker Willard Robert | 5 |
| #3 | Robert Walker Willard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1496958A | Rotary impeller for mechanical dishwashers | |
| US1437163A | Clothes-washing machine | |
| US1496957A | Culinary basket | |
| US1417432A | Shaft coupling | |
| US1426931A | Culinary basket for dishwashing machines | |
| US1402196A | Clothes-washing machine | |
| US1496956A | Kitchen fixture | |
| CA190491A | Dish cleaner | |
| CA195357A | Dish washing machine | |
| US1397846A | Dish-washing machine | |
| US1297943A | Dish-cleaner. | |
| CA181330A | Dish washing machine | |
| US1265843A | Mechanical dish-washer. | |
| US1265010A | Mechanical dish-washer. | |
| US1285490A | Culinary basket. | |
| CA217850A | Dish washing machine |