| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Mechanical elements | |
| #3 | Control | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Heat-exchange device details | |
| #2 | Shafts | |
| #3 | Heat-exchanger without contact | |
| #4 | Systems controlling non-electric variables | |
| #5 | Fluid heaters | |
| #6 | Springs | |
| #7 | Mechanical control devices | |
| #8 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Meyer Frenkel | 10 |
| Publication | Filing date | Title |
|---|---|---|
| US2806676A | Heat transfer apparatus | |
| US2656173A | Variable speed governing mechanism with modifier | |
| US2639140A | Variable rate spring device | |
| US2651516A | Governing mechanism with variable force | |
| US2631904A | Taper roller bearing | |
| US2623796A | Angular contact ball bearing | |
| US2609184A | Heat exchanger | |
| US2659392A | Heat exchanger | |
| US2597091A | Heat exchanger | |
| GB577916A | Improvements relating to air heaters |