| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology | |
| #3 | Optics | |
| #4 | Packaging and shipping | |
| #5 | Machines | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Portable lighting devices | |
| #2 | Lighting device details | |
| #3 | Batteries | |
| #4 | Unspecified technologies | |
| #5 | Cameras | |
| #6 | Containers for goods storage | |
| #7 | Loudspeakers and microphones | |
| #8 | Household appliances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hipwell Harry H | 13 |
| #2 | Hipwell Harry T | 6 |
| #3 | Hipwell Harry Thomas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1853272A | Flash lamp structure for cameras | |
| US1565450A | Electric battery and method of making the same | |
| US1520025A | Switch for portable electric lamps | |
| US1492296A | Receiving apparatus for wireless communication | |
| US1398518A | Flashlight-battery | |
| US1382912A | Insulator | |
| US1261933A | Grease-gun. | |
| US1149913A | Flash-light. | |
| US1144201A | Portable flash-light. | |
| US1165505A | Spring globe-holder. | |
| US1134977A | Pocket flash-light. | |
| US1094071A | Globe-holder. | |
| US1001403A | Display-frame. |