| Patents for Frank D. Winkley |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| RE14,667 | Jun. 10, 1919 | F.D. Winkley | Lubricating system | |
| 1,463,861 | Aug. 07, 1923 | F.D. Winkley | Lubricating apparatus | industrial machine lubrication |
| 1,479,124 | Jan. 01, 1924 | F.D. Winkley | Counterboring or counterfacing tool | |
| 1,541,409 | Jun. 09, 1925 | F.D. Winkley | Lubricating Coupling | tool lubricators |
| 1,545,379 | Jul. 07, 1925 | F.D. Winkley | Dispensing apparatus | industrial machine lubrication |
| 1,607,855 | Nov. 23, 1926 | F.D. Winkley | Lubricating apparatus | industrial machine lubrication |
| 1,658,217 | Feb. 07, 1928 | F.D. Winkley | Lubricating system | industrial machine lubrication |
| 1,886,457 | Nov. 08, 1932 | F.D. Winkley | Transplanting Machine | crop planters |
