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| All Patents in class 408/214 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,622,209 | Mar. 22, 1927 | C.B. Robinson | Boring and Reaming Tool | tapered reamers | |
| 1,939,430 | Dec. 12, 1933 | A.B. Andrews | Sampling tool for pulp or the like | papermaker | |
| 2,083,418 | Jun. 08, 1937 | A.B. Andrews | Sampling tool for pulp or the like | papermaker | |
| 2,358,077 | Sep. 12, 1944 | A.C. Koett | Auger bit | auger bits | |
| 2,775,341 | Dec. 25, 1956 | R.J. Williams | Hand Bit Assembly Holder | hand drills | |