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| All Patents in class 384/487 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,855,193 | Apr. 26, 1932 | D.C. Klausmeyer | Oilproof Spindle End | metalworking machine mechanisms | |
| 1,991,614 | Feb. 19, 1935 | T.G. Jonn, A.A. Breuer | Oil check for bearings | industrial machine lubrication | |