| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Materials and metallurgy | |
| #3 | Machine tools | |
| #4 | Transport | |
| #5 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Metal tempering | |
| #3 | Hand-held cutting tools | |
| #4 | Brushes | |
| #5 | Electrical vehicle propulsion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nelson George F | 11 |
| #2 | Bean Joseph H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2013249A | Low carbon steel | |
| US1985456A | Method of treating metals | |
| US1701792A | Pump | |
| US1672422A | Pump | |
| US1484147A | High-vacuum pump | |
| US1224008A | Motor for massage apparatus. | |
| US1218300A | Vacuum-pump. | |
| CA145134A | Pump and motor | |
| US979686A | Trocha-cutter. | |
| US690313A | Trolley-pole attachment. | |
| CA364879A | Metal processing |