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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 |
| 6227591 | Dual alloy railroad wheel A railroad wheel formed from at least two metallic alloys. In one embodiment, a railroad wheel has a body formed from a first alloy and a rim formed from a second alloy initially in powder form. In an exemplary embodiment, to form the dual alloy wheel the... | 05/08/2001 |
| 6073346 | Dual alloy railroad wheel A railroad wheel formed from at least two metallic alloys. In one embodiment, a railroad wheel has a body formed from a first alloy and a rim formed from a second alloy initially in powder form. In an exemplary embodiment, to form the dual alloy wheel the... | 06/13/2000 |
