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| Patents for William F. Dalzen | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,961,925 | Jun. 05, 1934 | W.F. Dalzen, J.C. Drader | Testing Device | ||
| 2,123,717 | Jul. 12, 1938 | W.F. Dalzen | Gear Finishing Machine | ||
| 2,267,692 | Dec. 23, 1941 | W.F. Dalzen | Method of Cutting and Finishing Gear Teeth | ||
 | 2,277,213 | Mar. 24, 1942 | W.F. Dalzen | Thread grinding machines | |
| 2,305,144 | Dec. 15, 1942 | W.F. Dalzen | Cutting Tool | ||
 | 2,308,317 | Jan. 12, 1943 | J. Sneed | Grinding wheel dresser | |