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| Patents for William M. Knourek | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,368,403 | Feb. 15, 1921 | W.M. Knourek | Knife-holder for shapers | cutterheads | |
| 1,785,351 | Dec. 16, 1930 | W.M. Knourek | Mortising tool | mortise chisels | |
| 2,679,869 | Jun. 01, 1954 | W.M. Knourek | Machine for forming interlocking mitered joints for muntin structures | miter machines | |