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| Patents for John D. Karle | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,405,596 | Feb. 07, 1922 | J.D. Karle | Brush holder | ||
| 1,418,379 | Jun. 06, 1922 | J.D. Karle | Method of securing ball-bearings to shafts | ||
| 1,620,259 | Mar. 08, 1927 | J.D. Karle | Medallion | ||
| 1,737,538 | Nov. 26, 1929 | J.D. Karle | Short-circuiting device | ||
| 1,769,785 | Jul. 01, 1930 | J.D. Karle | Dynamo-electric machine | ||
| 1,769,786 | Jul. 01, 1930 | J.D. Karle | Dynamo-electric machine | ||
| 1,911,574 | May 30, 1933 | J.D. Karle | Commutator Slotting Machine | ||