| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | Switzerland | 4 | |
| #3 | Denmark | 4 | |
| #4 | Spain | 4 | |
| #5 | Austria | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Furnaces | |
| #3 | Manufacturing processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lundberg Elof Karl Hjalmar | 11 |
| #2 | Karl Hjalmar Lundberg Elof | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US1278696A | Smelting-furnace. | |
| GB108498A | Improvements in Smelting Furnaces. | |
| CA213660A | Self closing and shock preventing valves | |
| CA248157A | Starting device for valves | |
| CA248156A | Self-closing valve | |
| CA268036A | Water closet |