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| All Patents in class 184/105.3 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,201,414 | Oct. 17, 1916 | F.D. Winkley | Lubricating system | ||
 | 1,307,734 | Jun. 24, 1919 | A.V. Gullborg | Lubricating Means | |
 | 1,459,662 | Jun. 19, 1923 | C.W. Manzel | Lubricating System | |
 | 1,475,980 | Dec. 04, 1923 | O. Zerk | Lubricating Apparatus | |
| 1,648,140 | Nov. 08, 1927 | C.W. Manzel | Lubricating Attachment | ||
 | 1,697,217 | Jan. 01, 1929 | O.U. Zerk | Lubricant Fitting | |
 | 1,748,819 | Feb. 25, 1930 | O.U. Zerk | Lubricating Coupler | |