| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Milling | |
| #3 | Grinding or polishing devices | |
| #4 | Earth drilling | |
| #5 | Working stone | |
| #6 | Sawing | |
| #7 | Turning | |
| #8 | Accessories for machine tools | |
| #9 | Metal-working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steffes Milton J | 6 |
| #2 | Emil Brocker | 2 |
| #3 | Horton Frank J | 1 |
| #4 | Marsh Robert H | 1 |
| #5 | Ralph Goldsmith Thomas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2598459A | Masonry drill | |
| US2589451A | Method of forming circular cutters | |
| US2418734A | Tool holder | |
| US2476749A | Rotary cutter | |
| US2422220A | Diamond wheel dresser | |
| US2402945A | Grinding wheel dressing device | |
| US2420057A | Inserted blade cutter and clamping means | |
| US2411784A | Milling cutter | |
| US2350234A | Grinding machine | |
| CA432592A | Inserted blade cutter and clamp | |
| CA461657A | Adjustable machine tool |