| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Portable lighting devices | |
| #2 | Batteries | |
| #3 | Non-portable lighting devices | |
| #4 | Lighting device details | |
| #5 | Household appliances | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rosenfeld Francis M | 7 |
| #2 | Holler Homer D | 1 |
| #3 | William Ramsay Karl Henrik | 1 |
| #4 | Thomson George A | 1 |
| #5 | Shaw Louis E | 1 |
| #6 | Kahn Walter D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1644746A | Dry-cell electrode and method of making the same | |
| US1544236A | Portable electric light | |
| US1521295A | Dry cell | |
| GB148835A | Improvements in or relating to electric flash lights and the like | |
| US1390389A | Lighting device | |
| US1348665A | Lamp-support | |
| US1346913A | Lamp-support | |
| US1355849A | Portable lamp | |
| US1405630A | Flash light | |
| US1397705A | Portable electric lamp | |
| US1379697A | Portable electric lamp |