| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Alfred P. Albrecht | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,193,917 | Mar. 19, 1940 | A.P. Albrecht, A.R. Bone | Bit Extension | drill bit extensions | |
| 2,215,344 | Sep. 17, 1940 | A.P. Albrecht | Micro Dial | drill bits | |