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| Patents for Adde & Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 644,285 | Feb. 27, 1900 | A. Ek | Machine for pointing pickets | |
 | 766,942 | Aug. 09, 1904 | E. Ek | Measuring-machine or meter | |
 | 888,599 | May 26, 1908 | E. Ek | Meter | |
 | 1,392,572 | Oct. 04, 1921 | E. Ek | Brake for lineal-measuring registers | |
 | 1,392,573 | Oct. 04, 1921 | E. Ek | Register for lineal measuring | |
 | 1,664,919 | Apr. 03, 1928 | E. Ek | Operating device | |
 | 1,894,307 | Jan. 17, 1933 | E. Ek | Measuring and control apparatus | |