| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Australia | 2 | |
| #3 | Canada | 2 | |
| #4 | Brazil | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Spain | 1 | |
| #7 | Italy | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology | |
| #3 | Machines | |
| #4 | Consumer goods |
| # | Name | Total Patents |
|---|---|---|
| #1 | Garretson Keith H | 8 |
| #2 | Garretson Owen L | 3 |
| #3 | Garretson K | 2 |
| #4 | Garretson K H | 1 |
| #5 | Garretson Keith Howard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4829957A | Gaseous fuel injection system for internal combustion engines | |
| US4375798A | Apparatus for alternate liquid or gaseous fuel operation of internal combustion engines | |
| AU6334480A | Alternate liquid/gaseous fuel operation of engines | |
| CA1134226A | Apparatus for alternate liquid or gaseous fuel operation of internal combustion engines | |
| US4308843A | Slow-run system and apparatus for gaseous fueled internal combustion engines | |
| US3974851A | Demand type governors |