| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Mechanical elements | |
| #5 | Chemical engineering | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Laundering textiles | |
| #2 | Unspecified technologies | |
| #3 | Domestic heating systems | |
| #4 | Gearing | |
| #5 | Drying solid materials by removing liquid | |
| #6 | Office furniture | |
| #7 | Air-conditioning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Francis T | 24 |
| Publication | Filing date | Title |
|---|---|---|
| US1895128A | Rack | |
| US1792167A | Ironing machine | |
| US1602532A | Drier | |
| US1530270A | Drier | |
| US1397100A | Drier | |
| US1270297A | Ironing-machine. | |
| CA185241A | Washing machine | |
| US1218778A | Mechanical movement. | |
| US1213203A | Clutch and brake mechanism. | |
| US1200620A | Driving mechanism. | |
| US1213202A | Washing-machine. | |
| US1133145A | Ironing-board. | |
| US1200619A | Mechanical movement. | |
| US1128318A | Clothes-drier. | |
| US1058700A | Safety device for wringers. | |
| US1071923A | Wringer attachment. | |
| US950924A | Clothes-drier. | |
| US950923A | Clothes-drier. | |
| US913823A | Clothes-drier. | |
| CA101582A | Drier |