| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Engines, pumps and turbines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Casting metal | |
| #2 | Cylinders for combustion engines | |
| #3 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bowser Percy L Jr | 6 |
| #2 | Venner William M | 5 |
| #3 | Peterson William F | 5 |
| #4 | Jubel Henry A | 2 |
| #5 | Benner William M | 1 |
| #6 | Wainwright William N | 1 |
| #7 | Rich John W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA576243A | Piston molding machine | |
| CA623768A | Piston molding machine | |
| CA535632A | Method and apparatus for molding pistons | |
| CA704203A | Piston ring groove protector | |
| CA574352A | Trunk piston | |
| CA637894A | Trunk piston | |
| CA538809A | Cores for mold casting pistons | |
| CA655505A | Trunk piston | |
| CA577926A | Trunk piston |