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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 |
| 7315010 | Electric heat sealer with safety device An electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber, a press bar pivotally connected to the casing, a sealing mechanism supported on a compression spring in a spring holder inside the casing, a... | 01/01/2008 |
| 7291810 | Hand-held electric heat sealer A hand-held electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and a safety device. The sealing mechanism has a heating wire, which produces heat for sealing the plastic bag or the like when turned on. T... | 11/06/2007 |
