| 1762241 | Grinding cement materials, etc. | |||
| 1795603 | Method of producing pulp | |||
| 1847967 | Attrition mill | |||
| 2144333 | Process of drying starch | |||
| 2184903 | Grinding mill | |||
| 2212544 | Process of preparing chocolate | |||
| 2295473 | Grinding mill | |||
| 2400382 | Closed hammer mill circuits | |||
| 2561043 | Apparatus for grinding combustible materials | |||
| 2609150 | Mechanical pulverization of refrigerated plastics | |||
| 2609995 | Centrifugal mill | |||
| 2677504 | Method of mixing, vacuum drying, and pulverizing an ortho-cellutone dye |
| GB287318A | ||||
| GB524998A |