| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Chemical engineering | |
| #3 | Machines | |
| #4 | Engines, pumps and turbines | |
| #5 | Medical technology | |
| #6 | Machine tools | |
| #7 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Charles Davies | 13 |
| #2 | Davies Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3448675A | Air diffuser | |
| US3308745A | Air diffuser | |
| US2907260A | Air diffuser | |
| US2690203A | Method and apparatus for making spiraliform elements | |
| US2727456A | Adjustable air diffusers | |
| US2441237A | Tubal insufflator | |
| US2456391A | Ventilator | |
| US2395319A | Air register | |
| US2265112A | Ventilator | |
| US2008751A | Filter | |
| US2002936A | Filter | |
| US2061535A | Ventilator | |
| US1890499A | Filter | |
| US1832281A | Ventilator |