| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | United States | 6 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Environmental technology | |
| #3 | Mechanical elements | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Garbage disposal | |
| #3 | Servomotors | |
| #4 | Dairy products production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hallstrom Olof A | 10 |
| #2 | Hallstrom Olof A Jr | 3 |
| #3 | Hallstrom Daniel C | 1 |
| #4 | Hallstrom Steven A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2008317568A1 | Garbage truck and self-contained loading and unloading system therefor | |
| DE19515762A1 | Reversible fluid pressure drive unit | |
| US5228555A | Load positioning and conveying system | |
| CA1289906C | Reciprocating conveyor | |
| CA1094969A | Reciprocating conveyor | |
| CA1094968A | Reciprocating conveyor i | |
| CA1091611A | Reciprocating conveyor | |
| US4184587A | Reciprocating conveyor and modular drive unit therefor | |
| US4144963A | Reciprocating conveyor | |
| US3881448A | Milking valve |