| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 2 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Materials and metallurgy | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Cylinders for combustion engines | |
| #2 | Foundry moulding | |
| #3 | Special machines | |
| #4 | Casting metal | |
| #5 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Blettner George H | 9 |
| #2 | Blettney George H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB496084A | Improvements in and relating to methods of casting pistons | |
| US2101046A | Art of casting pistons | |
| US2101045A | Internal combustion engine | |
| US2104893A | Piston | |
| US2148423A | Method of making composite pistons | |
| US2101044A | Method of making pistons | |
| US2104892A | Internal combustion engine construction | |
| US2101043A | Apparatus for making pistons | |
| US1980658A | Piston | |
| CA385482A | Internal combustion engine | |
| CA384166A | Piston casting method |