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