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Thomas Edison ; 1889
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| Number | Title | Issue Date |
| D622105 | Cup | 08/24/2010 |
| 6772854 | Device and method for inserting acoustic dampers into earphones The present invention relates generally to a device and method for inserting and retaining an acoustical damper in a sound port for in-ear monitoring systems. In particular, a device having an insertion rod for guiding an acoustical damper into the opening of a soun... | 08/10/2004 |