| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 3 | |
| #3 | Belgium | 1 | |
| #4 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement | |
| #5 | Control | |
| #6 | Chemical engineering | |
| #7 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nelson Robert E | 16 |
| #2 | Robaato Edomondo Neruson | 1 |
| #3 | Nelson Robert M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5806472A | Method and means for removal of used oil and blending with fuel for disposal in an engine | |
| US3859484A | Cyclic pressure switch with plural diaphrams | |
| US3625636A | Liquid level regulating system | |
| US3288433A | Poppet valve | |
| US3143934A | Seal assembly for a bore | |
| US3134332A | Pump and liquid level regulator | |
| US2966233A | Exhaust condensers | |
| US2846961A | Oven circulator | |
| US2591187A | Engine exhaust condenser | |
| US2145429A | Fuel injection system | |
| US1860784A | Fuel injection device | |
| US1272301A | Ore-separator. | |
| US862839A | Measuring-tape holder. | |
| CA718676A | Seal assembly for a bore | |
| CA724930A | Pump and liquid level regulator |