| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 10 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Panyard John F | 22 |
| Publication | Filing date | Title |
|---|---|---|
| US1644944A | Piston packing | |
| US1638453A | Piston packing | |
| US1646978A | Piston packing | |
| US1586575A | Piston packing | |
| US1626749A | Piston packing | |
| US1626750A | Piston packing | |
| US1546401A | Piston and cylinder construction | |
| US1545275A | Piston packing | |
| US1667947A | Piston packing | |
| US1545274A | Piston packing | |
| US1496428A | Piston packing | |
| US1636833A | Piston ring | |
| CA235400A | Piston ring | |
| CA267633A | Piston and cylinder | |
| CA288398A | Piston packing | |
| CA281763A | Piston packing | |
| CA268220A | Piston packing | |
| CA275037A | Piston packing | |
| CA237017A | Piston packing | |
| CA261918A | Piston packing |