| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Unspecified technologies | |
| #3 | Turning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sheldon William M | 6 |
| #2 | Louis Ruprecht | 2 |
| #3 | Kollstede Alfred G | 2 |
| #4 | Sheldon William Mallory | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB595428A | Improvement in pulverizing apparatus | |
| GB592954A | Improvements in machines for comminuting tough and ductile materials | |
| US2352127A | Pulverizing mill rotor | |
| GB550942A | Improvements in pulverizing mills | |
| US2319192A | Pulverizing mill | |
| US2316124A | Apparatus for impact pulverizing | |
| US2212482A | Reducing mill | |
| US2128194A | Reducing mill | |
| US1711464A | Grinding machine | |
| US1622849A | Method of and machine for grinding | |
| CA433616A | Reducing machine | |
| CA428304A | Pulverizing mill |