| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Thermal processes | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Structural elements | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Unspecified technologies | |
| #4 | Fire-fighting | |
| #5 | Sewers | |
| #6 | Vehicle signalling and lighting | |
| #7 | Hydraulic engineering | |
| #8 | Controlling combustion | |
| #9 | Rolling metal | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Albert L | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2196116A | Catch basin cleaner | |
| US1522524A | Power transmitter | |
| US1670115A | Signal for vehicles | |
| US1409725A | Fire extinguisher | |
| US1270836A | Means for roughening bars. | |
| CA165310A | Oil controller | |
| US1173976A | Oil-controller. | |
| US1039138A | Process of electric welding. | |
| US1039137A | Process of electric welding. | |
| US1039135A | Process of electric welding. | |
| US917304A | Metal reinforce. | |
| US862254A | Corrugated bar. | |
| US858518A | Corrugated bar. | |
| US858517A | Corrugated bar. | |
| US844599A | Concrete-and-metal construction. |