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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 |
| 4572228 | Connector valve assembly for inflatable packer device The connector valve assembly is for insertion between a fluid inlet line assembly and an inflatable packer device having an externally disposed chemical dispensing assembly to pressure test and repair pipelines. The connector valve assembly is connectable... | 02/25/1986 |
| 4096997 | Dual outlet check valve assembly A non-clogging check valve assembly useful in the simultaneous dispensing of individual components of a two-part grouting material. Two opposed flexible outlet nozzles mounted adjacent one another in a body member allow the components to be dispensed in a... | 06/27/1978 |
| 3951173 | Method and apparatus for sealing large diameter pipes An inflatable packer positionable in the interior of pipes for packing a sealant material into a void or joint in the pipe wall. Inflatable outer casings mounted on a support rim are utilized to seal off the area surrounding the void or joint. The support... | 04/20/1976 |
