| 3085744 | Automatically balanced weighbeam systems | 1963-04-16 | ||
| 2992559 | Ratio totalizers provided with square root extracting means | 1961-07-18 | ||
| 2967537 | Control apparatus responsive to a plurality of independently variable pressures | 1961-01-10 | ||
| 2918214 | Automatically balanced weighbeam systems | 1959-12-22 | ||
| 2643055 | Automatically balanced force bridge | 1953-06-23 |