| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Clutches and brakes | |
| #3 | Shafts | |
| #4 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Joseph Goostray | 4 |
| #2 | Platt John G | 3 |
| #3 | Goostray Joseph | 2 |
| #4 | Ellet Victor W | 2 |
| #5 | Fetters Arthur H | 1 |
| #6 | Root Albert B Jr | 1 |
| #7 | Ellis Daniel S | 1 |
| #8 | Root Jr Albert B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2339949A | Piston and packing | |
| US2270205A | Bearing element for machine parts | |
| US2124527A | Piston for horizontal cylinders | |
| US1970132A | Steam engine piston | |
| US1953399A | Piston valve | |
| US1925797A | Piston head | |
| US1865312A | Brake drum | |
| US1865311A | Brake drum | |
| US1775521A | Brake drum | |
| US1643628A | Piston ring | |
| CA255358A | Piston ring | |
| CA421404A | Piston and packing | |
| CA324349A | Brake drum | |
| CA310162A | Brake drum | |
| CA255359A | Method of making piston rings |