| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Portable lighting devices | |
| #3 | Lighting device details | |
| #4 | Testing of structures |
| # | Name | Total Patents |
|---|---|---|
| #1 | Handlan Alexander H | 16 |
| Publication | Filing date | Title |
|---|---|---|
| US1913545A | Signal lamp | |
| US1945190A | Lens for signal lamps | |
| US1701182A | Lantern | |
| US1735572A | Signal lamp | |
| US1667380A | Light-source support | |
| US1667379A | Lantern | |
| US1667378A | Hand lantern | |
| US1676861A | Lantern | |
| US1959671A | Signaling device | |
| US1627895A | Signal lantern and lens therefor | |
| US1778717A | Aligning device for signal lanterns | |
| US1688619A | Focusing device | |
| US1744963A | Signal lantern and means for adjusting same | |
| US1584928A | Lantern | |
| US1536292A | Lantern frame | |
| US1477755A | Lantern |