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| Patents for Roger W. Pitan | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 3,902,576 | Sep. 02, 1975 | R.W. Pitan, R.M. Biessener | Add-on unidirectional brake | |
 | 4,046,391 | Sep. 06, 1977 | R.W. Pitan, E.L. Restad | Stair climbing and descending attachment for a hand truck | |