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| Patents for Curtis Companies, Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,622,836 | Mar. 29, 1927 | S. Madsen | Feeding machine | woodworking machine stockfeeding mechanisms | |
| 1,635,149 | Jul. 05, 1927 | S. Madsen | Veneer-core machine | veneer machines | |
| 1,700,683 | Jan. 29, 1929 | S. Madsen | Double-end universal saw | circular crosscut saws | |
| 1,756,296 | Apr. 29, 1930 | S. Madsen | Window-frame machine | specialty woodworking machines | |
| 1,764,965 | Jun. 17, 1930 | S. Madsen | Straight-line overhead cut-off saw | circular crosscut saws | |