| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 59 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Measurement | |
| #5 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mastenbrook Henry J | 17 |
| #2 | Barrett Joseph M | 10 |
| #3 | Mcderment James H | 9 |
| #4 | Schweitzer Earl O | 6 |
| #5 | Johnson Jay P | 5 |
| #6 | Fraser Howard S | 4 |
| #7 | Swartwout Charles J | 3 |
| #8 | Swartwout Iii Denton K | 2 |
| #9 | Lauritsen Charles C | 2 |
| #10 | Gilliland Roger L | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2902861A | Pressure sensing device | |
| US2814979A | Smoke exhaust apparatus | |
| US2837175A | Vibration dampener | |
| US2913909A | Pressure transmitter | |
| GB771056A | Power relay | |
| GB771057A | Improvements in or relating to electrical control systems | |
| GB740640A | Strip chart recorder | |
| US2784660A | Roof ventilator | |
| US2759129A | Control system | |
| US2745711A | Strip chart recorder | |
| US2628139A | Sealed pressure responsive mechanism | |
| US2598187A | Valve | |
| US2565131A | Ventilator | |
| US2659350A | Feed water regulation | |
| US2551004A | Ventilator | |
| US2375431A | Control method and mechanism | |
| US2367454A | Ventilator | |
| US2355458A | Desuperheating valve | |
| US2276055A | Method of and apparatus for desuperheating | |
| US2171883A | Rotary ventilator |