| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | Italy | 1 | |
| #9 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Unspecified technologies | |
| #3 | Cyclically operating valves | |
| #4 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Appleby J Robert | 4 |
| #2 | Horvath Frank P | 4 |
| #3 | Morris William J | 4 |
| #4 | Acker Franklin L | 3 |
| #5 | Uiriamu Jiee Morisu | 1 |
| #6 | Furanku Pii Hoobaato | 1 |
| #7 | Jiee Robaato Apurubai | 1 |
| #8 | Teper Boris R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5860774A | Valve resurfacing device | |
| US4637762A | Hand-operated valve refacer | |
| AU4208485A | Hand-operated valve refacer | |
| US4147462A | Machine for finishing valve seats | |
| US4067701A | Grinding machine for carbide cutting elements |