| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Morris Propp | 4 |
| #2 | Harry Hertzberg | 3 |
| #3 | Louis Propp | 3 |
| #4 | Hyman Shapiro | 2 |
| #5 | Propp Morris | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1887784A | Electric outlet socket | |
| US1928605A | Electrical outlet fitting | |
| US1784388A | Electric socket fitting | |
| US1800728A | Armor for electrical connecting plugs | |
| US1784440A | Electric-lamp socket | |
| US1733470A | Electric socket | |
| US1831809A | Electric attachment plug and fitting | |
| US1941489A | Electrical attachment fitting | |
| US1941488A | Electrical attachment fitting | |
| US1751842A | Current tap fitting | |
| US1726585A | Decorative device | |
| US1838329A | Electrical socket | |
| CA335275A | Current tap fitting |