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| Patents for Albert C. Koett | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,358,077 | Sep. 12, 1944 | A.C. Koett | Auger bit | |
 | 2,360,144 | Oct. 10, 1944 | A.C. Koett | Drill chuck | |
 | 2,372,006 | Mar. 20, 1945 | A.C. Koett | Chuck | |
 | 2,502,656 | Apr. 04, 1950 | A.C. Koett | Power-driven rotary hand guided cutting tool | |
 | 2,553,416 | May 15, 1951 | A.C. Koett | Universal drill head | |