| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Consumer goods | |
| #5 | Basic materials chemistry | |
| #6 | Machine tools | |
| #7 | Engines, pumps and turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Graham Harold M | 6 |
| #2 | Townsend Tinker | 5 |
| #3 | Kenneth Davis Franklyn | 1 |
| #4 | Wilson James R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2521030A | Floating drill jig apparatus | |
| US2498145A | Heat exchanger | |
| US2460660A | Heat exchanger | |
| US2274439A | Pressure vessel | |
| US2247105A | Closure for pressure vessels | |
| US2296620A | Closure for pressure vessels | |
| US1961212A | Refrigerating apparatus | |
| US1974741A | Refrigerating apparatus | |
| US1945973A | Vacuum producing equipment | |
| US2052619A | Refrigerating apparatus | |
| US2065579A | Refrigerating system | |
| US1961200A | Method of recovering desirable constituents of gas or vapor mixture | |
| US1815618A | Heat exchanger |