| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Thomas Dean G | 4 |
| #2 | Nelson Ralph H | 3 |
| #3 | Bryant Edwin E | 3 |
| #4 | Nelson Charles E | 2 |
| #5 | Seils Eddy J | 1 |
| #6 | Jasensky Richard J | 1 |
| #7 | Hansen J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3827531A | Exhaust muffler | |
| US3703938A | Exhaust muffler | |
| US3687225A | Combined exhaust muffler with spark arrester | |
| US3545179A | Silencer | |
| US3445196A | Exhaust muffler with removable catalytic unit | |
| US3355258A | Catalytic exhaust muffler with internal reservoir | |
| US3159237A | Exhaust muffler | |
| US2850111A | Exhaust muffler | |
| US2960179A | Exhaust muffler | |
| US2928492A | Exhaust muffler | |
| US2825421A | Muffler | |
| US2777536A | Water-quench spark arrestor muffler | |
| US2520756A | Exhaust silencer for internalcombustion engines |