| 3169380 | Cooling of solids | |||
| 3097828 | Method and apparatus for mixing pulverulent or fine-grain material | |||
| 2716936 | Apparatus for roasting coffee | |||
| 2607199 | Method of cooling and conveying material | |||
| 2400051 | Process for treating plywood | |||
| 2309036 | Apparatus for conditioning molding sand | |||
| 2105778 | Automatic roaster | |||
| 2099945 | Method for the treatment of coffee or the like | |||
| 1547655 | Roaster for coffee, peanuts, etc. | |||
| 1237931 | N/A | |||
| 0741831 | N/A | |||
| 0255477 | N/A |