| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Germany | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Steam generation | |
| #2 | Casings for combustion chambers | |
| #3 | Unspecified technologies | |
| #4 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edgar Kidwell | 7 |
| #2 | Kidwell Edgar | 2 |
| #3 | Norman Appenzeller | 1 |
| #4 | Bonus George Y | 1 |
| #5 | Jackson John F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB326024A | Improvements in or relating to water-tube steam boilers | |
| US1680314A | Baffle for water-tube boilers | |
| US1577034A | Steam boiler | |
| US1629955A | Steam boiler | |
| US1629954A | Steam boiler | |
| GB212506A | Improvements in or relating to steam boilers | |
| US1647638A | Steam boiler | |
| US1585754A | Boiler apparatus for utilizing the waste gases from cement kilns | |
| US1456598A | Tube-bending machine | |
| US1457282A | Baffle for water-tube boilers | |
| US1457281A | Boiler construction | |
| CA232970A | Steam boiler | |
| CA236631A | Steam boiler |