| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Cylinders for combustion engines | |
| #2 | Special machines | |
| #3 | Pistons and sealings | |
| #4 | Cooling of machines | |
| #5 | Casting metal | |
| #6 | Foundry moulding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Day Ray E | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US3987709A | Piston | |
| US2995295A | Variable speed fan drive | |
| US2802708A | Piston | |
| US2802707A | Piston | |
| US2497210A | Method for casting metals | |
| US2120833A | Piston mold | |
| US2127767A | Piston | |
| US2120090A | Piston | |
| US2047857A | Piston | |
| US1944223A | Piston | |
| US2053324A | Piston | |
| US2047856A | Piston | |
| US1670956A | Aluminum alloy piston | |
| US2066613A | Piston | |
| CA912251A | Electric shaver |