| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 18 | |
| #2 | Canada | 14 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Downs Sewell H | 25 |
| #2 | Wasson Robert A | 7 |
| #3 | Zeluff Wendell C | 3 |
| #4 | Mcmurdie Francis J | 2 |
| #5 | Bowman John H | 1 |
| #6 | Monroe Lewis O | 1 |
| #7 | Downs Seweil H | 1 |
| #8 | Foskett Maynard L | 1 |
| #9 | Colbert Alvin H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3217976A | Fan equipment | |
| US3202342A | Fan equipment | |
| US3172671A | Shaft seal for a fan housing | |
| US3122307A | Fan equipment | |
| US3143283A | Fan equipment | |
| US3217790A | Air conditioning unit | |
| US3054288A | Automatic data system for fan testing | |
| US2903182A | Fan equipment | |
| US3011693A | Apparatus relating to centrifugal wheel inlet boundary control | |
| US3000249A | Punch with guide cooperating with a pattern fix on a work piece | |
| US2112955A | Conditioning apparatus | |
| US1928332A | Conditioning system | |
| US1928331A | Conditioning and ventilating system | |
| US1978127A | Inlet damper | |
| US1978128A | Vortex control | |
| US1978129A | Vortex control for fans | |
| US1877347A | Fan wheel | |
| US1739604A | Fan | |
| CA752147A | Fan equipment | |
| CA368115A | Air conditioning apparatus |