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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 |
| 7456860 | Surveillance system using pulse-coded rays Five infrared sensors are located in different height positions between respective main bodies 10A to 10H, and all of these infrared sensors transmit and receive 35 infrared rays pulse-coded in conformity with a start-stop system. In addition, these pu... | 11/25/2008 |
