| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 2 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Machine tools | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Vehicle brake control systems | |
| #2 | Locomotives | |
| #3 | Unspecified technologies | |
| #4 | Railway brakes | |
| #5 | Couplings | |
| #6 | Vehicle wheels | |
| #7 | Punching metal | |
| #8 | Electric switches | |
| #9 | Unspecified technologies | |
| #10 | Locks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Oscar | 18 |
| Publication | Filing date | Title |
|---|---|---|
| CA186035A | Carburetter | |
| US1174988A | Mechanically-actuated hammer. | |
| GB191420958A | Automatic Electric Fuse. | |
| US1154317A | Window-holder. | |
| US1187530A | Vehicle-coupling. | |
| US1191187A | Air-brake apparatus. | |
| US1086454A | Track-sanding apparatus. | |
| US1233364A | Electric switch. | |
| US1207295A | Means for controlling electrically-propelled vehicles. | |
| CA148207A | Track sander | |
| US1049725A | Floor-clamp. | |
| US1027852A | Locomotive-tender. | |
| US1065688A | Coupling for vehicles. | |
| US1041091A | Air-brake apparatus. | |
| US1013495A | Locomotive-tender. | |
| US971896A | Compressed-air system for railway-cars. | |
| US969877A | Air-brake system. | |
| US887331A | Electric water-heater. |