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| Patents for Heinz B. Opferkuch | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,106,432 | Oct. 08, 1963 | H.B. Opferkuch | Adjustable Journal Bearing with Automatic Heat Compensator | ||
| 3,119,307 | Jan. 28, 1964 | H.B. Opferkuch | Automatic Backlash Eliminator | ||