| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Unspecified technologies | |
| #3 | Safety devices | |
| #4 | Making metal sheets | |
| #5 | Perforating | |
| #6 | Supplying fuel to combustion device |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lawson John F | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2179940A | Automatic damper | |
| US1850176A | Method of and apparatus for electric resistance welding | |
| US1786759A | Electric welding | |
| US1805549A | Electric welding | |
| US1678986A | Electric welding | |
| US1677832A | Electric welding of long seams | |
| US1643307A | Method and apparatus for welding | |
| US1709587A | Electric tube-welding machine | |
| US1357643A | Safety attachment for power-presses | |
| US1171794A | Rotary punch and press. | |
| CA167784A | Rotary punch and press | |
| CA202224A | Safety device for power presses |