| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 66 | |
| #2 | Canada | 27 | |
| #3 | United Kingdom | 6 | |
| #4 | Switzerland | 4 | |
| #5 | Germany | 3 | |
| #6 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Unspecified technologies | |
| #3 | Cylinders for combustion engines | |
| #4 | Special machines | |
| #5 | Foundry moulding | |
| #6 | Unspecified technologies | |
| #7 | Tools for connecting or disengaging | |
| #8 | Sawing | |
| #9 | Supplying combustion engines | |
| #10 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Teetor Ralph R | 20 |
| #2 | Paton Roy W | 15 |
| #3 | Teetor Macy O | 12 |
| #4 | Teetor Charles N | 8 |
| #5 | Given Fred H | 6 |
| #6 | Bancroft Richard H | 4 |
| #7 | Circle Company The Perfect | 3 |
| #8 | Bramberry Harry M | 2 |
| #9 | Herman Teetor | 2 |
| #10 | Mccullough Wesley E | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2439702A | Piston ring | |
| US2452503A | Piston ring | |
| US2408846A | Antidetonation apparatus for automotive engines | |
| US2407192A | Piston | |
| US2343919A | Piston ring structure | |
| US2350064A | Piston expander | |
| US2268869A | Bearing member | |
| US2397220A | Piston ring | |
| US2214652A | Iron alloy | |
| US2236728A | Process of treating bearing members | |
| GB538685A | Piston ring structure | |
| US2236721A | Piston ring | |
| US2281123A | Piston ring | |
| US2210310A | Piston for internal combustion engines and the like | |
| US2343942A | Piston ring | |
| US2214651A | Piston ring | |
| US2220948A | Piston ring | |
| US2213452A | Piston ring | |
| US2387084A | Piston ring structure | |
| US2369263A | Piston ring |