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| All Patents in class 137/110 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,432,859 | Dec. 16, 1947 | F.Y. Carter | Refrigerant Flow Controlling Means | ||
| 2,835,267 | May 20, 1958 | R.H. Andresen, H.A. Andresen | Air Line Lubricator | ||
| 3,537,356 | Nov. 03, 1970 | E.I. Odell | Hydraulic Control System | ||