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| Patents for Mark S. Bakula | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,777,852 | Oct. 18, 1988 | E.T. Gustafson, A.J. Bliemeister, D.J. Caldwell, T.R. Herman, M.S. Bakula | Ratcheting Screwdriver | ||
| D307,236 | Apr. 17, 1990 | M.S. Bakula, S.R. Wente, T.S. Severson, D.J. Caldwell, S.S. Cascio | Screwdriver | screwdrivers | |