| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Spain | 2 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Unspecified technologies | |
| #3 | Vehicle wheels | |
| #4 | Vehicle tyre repairing | |
| #5 | Sewing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnston Harry B | 17 |
| Publication | Filing date | Title |
|---|---|---|
| US2376147A | Piston and piston ring | |
| US2376148A | Piston and piston ring | |
| US1418931A | Piston and piston ring | |
| US1422273A | Piston and piston ring | |
| US1591836A | Piston and piston ring | |
| US1591835A | Piston and piston ring | |
| US1419857A | Piston and piston ring | |
| US1419736A | Piston and connecting rod | |
| US1418802A | Piston and piston ring | |
| US1409954A | Wrist connection for pistons | |
| US1541508A | Tire | |
| US1424200A | Piston and piston ring | |
| US1335339A | Piston and piston-ring | |
| US1330189A | Piston and piston-ring | |
| US1330188A | Piston and piston-ring | |
| US1049491A | Button-sewing attachment. | |
| CA205860A | Piston and piston ring |