| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Electrical machinery and energy | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Non-portable lighting devices | |
| #3 | Unspecified technologies | |
| #4 | Power supply for electric vehicles | |
| #5 | Electric switches | |
| #6 | Lighting device details | |
| #7 | Nails | |
| #8 | Unspecified technologies | |
| #9 | Locks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hull Samuel P | 14 |
| #2 | Everett Edward A | 3 |
| #3 | Corcoran John J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2529697A | Joint | |
| US1680617A | Lock for interlocking levers | |
| US1584541A | Light signal | |
| US1558808A | Lamp bracket | |
| US1557699A | Adjustable lamp bracket | |
| US1621884A | Front rod | |
| US1549837A | Focusing-light-source support | |
| US1557698A | Railway signal | |
| US1363599A | Screw-padlock | |
| US1089564A | Circuit-controller. | |
| US1047415A | Circuit-controller. | |
| US1031449A | Rail-bond. | |
| US1031448A | Rail-bond. | |
| CA288935A | Lock for interlocking levers |