| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for John A. Roberts | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,792,208 | May 14, 1957 | J.A. Roberts, J.C. Merrill | Control Provision for Recording Mechanism | scales and balances | |
| 2,864,605 | Dec. 16, 1958 | M.T. Thorsson, J.A. Roberts | Automatic Range Changer with Weight Pick-Up | scales and balances | |