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| Patents for Richard R. Hollien | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,808,085 | Oct. 01, 1957 | R.R. Hollien, E.L. Staiger | Hand portable electric power unit | ||
| 2,934,113 | Apr. 26, 1960 | R.R. Hollien | Router bit and drive shaft assembly with pilot | ||
 | 3,008,499 | Nov. 14, 1961 | R.R. Hollien | Miter box construction | |