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| All Patents in class 81/15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,384,209 | Jul. 12, 1921 | J. O'Toole | Spark-plug-adjusting device | spark plug adjusting | |
| 1,420,064 | Jun. 20, 1922 | J.C. Stiles | Device for smoothing sheet metal | sheet metal | |
| 1,809,126 | Jun. 09, 1931 | H.W. Johnson | Metal-working tool | automotive tools | |
| 2,606,468 | Aug. 12, 1952 | A.M. Hexdall | Sheet metalworking hammer | hammers | |