| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Australia | 1 | |
| #6 | Switzerland | 1 | |
| #7 | France | 1 | |
| #8 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Unspecified technologies | |
| #3 | Accessories for machine tools | |
| #4 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perry Louis James | 5 |
| #2 | Perry Louis J | 3 |
| #3 | Kickhofel Max A | 1 |
| #4 | Ruisu Jieimuzu Peri | 1 |
| #5 | Perry L J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4567664A | Measuring gage for internal and external splines of a workpiece | |
| US4426177A | Automatic fault detection system for a machine tool | |
| US4056329A | Detection system for machine tools |