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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 6053257 | Hydraulic pressure takeout apparatus for a tractor A hydraulic pressure takeout apparatus for use on a tractor having a hydraulic device with right and left lift arms for raising and lowering a working implement. The hydraulic pressure takeout apparatus includes a valve assembly mounted on a hydraulic hou... | 04/25/2000 |
| 5277257 | Depth control mechanism for an implement A chain is connected at its distal end to the pin at the rod end of a cylinder on an implement lift and depth control assembly. An intermediate portion of the chain is trained around a gear which rotates about the axis of the pin connecting the base end o... | 01/11/1994 |
