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| Patents for James Ohlen | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 92,846 | Jul. 20, 1869 | H.A. Lanman | Improvement in saws | |
 | 221,602 | Nov. 11, 1879 | J. Ohlen | Improvement in insertable saw-teeth | |
 | 222,304 | Dec. 02, 1879 | R.H. Osgood | Improvement in inserted saw-teeth | |
 | 248,761 | Oct. 25, 1881 | A. Krieger | Insertable saw-tooth | |
 | 262,821 | Aug. 15, 1882 | J. Ohlen | Saw-handle | |
| 315,419 | Apr. 07, 1885 | A. Krieger | Protector for insertable saw-teeth | ||
| 334,241 | Jan. 12, 1886 | A. Krieger | Insertable saw-tooth | ||
 | 340,051 | Apr. 13, 1886 | A. Krieger | Saw-tooth | |