| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Domestic washing | |
| #2 | Venting or aerating devices | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walker Frank G | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2576982A | Spray device for washing machines | |
| US2615457A | Dish hold-down for dishwashing machines | |
| US2613388A | Vacuum cleaner air nozzle and adjustable brush therefor | |
| US2629390A | Dishwashing machine | |
| US2153322A | Dishwashing machine | |
| US2069985A | Dishwashing machine | |
| US1937738A | Dishwashing machine | |
| US1849259A | Valve | |
| US1977977A | Dishwashing machine | |
| CA515838A | Vacuum cleaner air nozzle and adjustable brush therefor | |
| CA518686A | Dishwashing machine | |
| CA364548A | Dish washing machine | |
| CA518685A | Spray device for a washing machine |