| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Agriculture | |
| #3 | Optics | |
| #4 | Organic fine chemistry | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Non-portable lighting devices | |
| #2 | Electrically-conductive connections | |
| #3 | Electric switches | |
| #4 | Animal care | |
| #5 | Heterocyclic compounds | |
| #6 | Hand-held cutting tools | |
| #7 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Gustaf A | 15 |
| #2 | Pedersen Peder | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2132852A | Lamp socket | |
| US2132851A | Attachment plug receptacle | |
| US2041414A | Electric switch | |
| US2103986A | Electric switch | |
| US2102465A | Lamp socket | |
| US2047564A | Pendant switch and outlet | |
| US2047563A | Lamp socket | |
| US1898186A | Electric switch | |
| US2101680A | Electric light fixture | |
| US2045915A | Lamp socket | |
| US1982306A | Lamp socket | |
| US1789178A | Casting reel | |
| US1168307A | Fishing-reel. | |
| US1132852A | Advertising apparatus. | |
| US934074A | Safety-razor. |