| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Mechanical elements | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Warren S | 12 |
| Publication | Filing date | Title |
|---|---|---|
| CA107758A | Steam generator | |
| US858656A | Apparatus for generating steam. | |
| US854650A | Condenser. | |
| US854649A | Steam-generator. | |
| US813098A | Steam-generator. | |
| US816474A | Steam-trap. | |
| US813213A | Motor-propelled vehicle. | |
| US733210A | Thermostatic temperature-regulator. | |
| CA52257A | Mechanical movement | |
| CA52258A | Heat regulating apparatus | |
| US773078A | Heating system. | |
| CA22022A | Electric valve for regulating temperature, etc. |