| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 372 | |
| #2 | United Kingdom | 48 | |
| #3 | Germany | 41 | |
| #4 | Canada | 24 | |
| #5 | France | 20 | |
| #6 | Switzerland | 14 | |
| #7 | Sweden | 8 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Control | |
| #5 | Engines, pumps and turbines | |
| #6 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Unspecified technologies | |
| #3 | Accessories for machine tools | |
| #4 | Turning | |
| #5 | Shafts | |
| #6 | Control or regulating systems | |
| #7 | Unspecified technologies | |
| #8 | Gearing | |
| #9 | Steam turbines | |
| #10 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Blood Harold L | 49 |
| #2 | Guild Waldo J | 37 |
| #3 | Hahn Robert S | 29 |
| #4 | Heald James N | 28 |
| #5 | Gallimore Keith F | 23 |
| #6 | Uhtenwoldt Herbert R | 23 |
| #7 | Lockwood George H | 20 |
| #8 | Schmidt William D | 20 |
| #9 | Jacobson Alden H | 18 |
| #10 | Drake Alden M | 18 |
| Publication | Filing date | Title |
|---|---|---|
| US3842543A | Grinding machine | |
| US3717960A | Grinding machine | |
| US3717991A | Impact time indicator | |
| CA921705A | Grinding machine | |
| CA918427A | Grinding machine | |
| US3745710A | Grinding machine | |
| US3688443A | Grinding machine | |
| US3664718A | Toolhead | |
| US3691699A | Grinding machine | |
| US3635109A | Machine tool | |
| US3708923A | Machine tool | |
| US3694969A | Automatic grinding machine | |
| US3582159A | Machine bearing | |
| GB1312062A | Machine tool | |
| US3688447A | Grinding machine | |
| CA918399A | Machine tool | |
| US3650076A | Grinding machine | |
| US3643382A | Grinding machine | |
| US3640138A | Machine tool | |
| US3644049A | Machine tool |