| Patents for Walter Nipken |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,499,408 | Mar. 07, 1950 | W. Nipken | Work holder | work holding |
| 2,623,440 | Dec. 30, 1952 | W. Nipken | Unitary work holder | work holding |
| 2,744,311 | May 08, 1956 | E. Nipken, W. Nipken | Drill extractor | drilling and boring |
| 2,771,297 | Nov. 20, 1956 | W. Nipken | Adjustable stop for a collet or the like | work holding |
| 2,823,563 | Feb. 18, 1958 | W. Nipken | Depth control attachment for a drill or the like | drilling and boring |
| 2,915,925 | Dec. 08, 1959 | W. Nipken | Depth control attachment for a drill or the like | drilling and boring |
