| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Measurement | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Sawing | |
| #2 | Grinding or polishing devices | |
| #3 | Analysing materials | |
| #4 | Measuring electric variables | |
| #5 | Measuring mechanical vibrations | |
| #6 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shepherd James E | 11 |
| #2 | Rakow Joseph F | 1 |
| #3 | Pattillo Ii Phillip David | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5000061A | Dressing apparatus for grinding wheels | |
| US5003843A | Saw chain holding mechanism for grinding machines | |
| US5033333A | Saw chain grinding machine | |
| US5031482A | Saw chain grinding machine | |
| US4977516A | Data acquisition device for balancing rotating components of large machinery | |
| US4903553A | Dressing apparatus for grinding wheels | |
| US4836058A | Saw chain grinding machine | |
| US2370692A | Phase angle indicator |