| 2155273 | Washing apparatus | |||
| 2281852 | Dishwashing machine | |||
| 2338689 | Process of treating and conditioning containers | |||
| 2385264 | Method of cleansing dishes | |||
| 2390757 | Dishwashing machine | |||
| 2515142 | Ion exchange materials | |||
| 2515581 | Regeneration of ion exchange materials | |||
| 2535035 | Method of electrolytic water softening and ph adjustment | |||
| 2561631 | Automatic glass washing and sterilizing machine | |||
| 2633437 | Method of washing aluminum kitchen utensils | |||
| 2671037 | Method of washing dishes or the like |