| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Measurement | |
| #3 | Mechanical elements | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Shafts | |
| #3 | Measuring length, angles and areas | |
| #4 | Postal sorting | |
| #5 | Testing of structures | |
| #6 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hans Lutz | 9 |
| #2 | Knowles Harford C | 5 |
| #3 | Samuel Trimbath | 1 |
| #4 | Jordan Benjamin H | 1 |
| #5 | Lozier William V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1792994A | Method of making trimming dies | |
| US1434131A | Tool-grinding machine | |
| US1464938A | Gauging machine | |
| US1464950A | Grinding machine | |
| US1481295A | Gauging machine | |
| US1516746A | Grinding machine | |
| US1511480A | Double-row antifriction bearing | |
| US1593580A | Roller bearing | |
| US1491050A | Machine for testing bearings | |
| US1474081A | Antifriction bearing | |
| US1524047A | Measuring instrument | |
| US1579876A | Process and apparatus for grinding rollers | |
| US1576769A | Machine for grinding rollers | |
| US1505352A | Antifriction bearing | |
| US1416838A | Antifriction bearing | |
| US1579900A | Testing machine for gear cutters | |
| US1495494A | Ball-gauging machine |