The broken line portions of the headphone in
The broken line portions of the headphone in
| Number | Name | Date | Kind |
|---|---|---|---|
| 1483315 | Saal | Feb 1924 | A |
| 2420245 | Hurst | May 1947 | A |
| 2782423 | Simon et al. | Feb 1957 | A |
| 3505684 | Hutchinson et al. | Apr 1970 | A |
| D223256 | Thomson | Apr 1972 | S |
| 4546215 | Ferraro | Oct 1985 | A |
| 4572323 | Randall | Feb 1986 | A |
| D347845 | Sumikawa | Jun 1994 | S |
| D399206 | Yasutomi et al. | Oct 1998 | S |
| 6868164 | Ito et al. | Mar 2005 | B2 |
| D510335 | Suzuki | Oct 2005 | S |
| D517054 | Yang | Mar 2006 | S |
| D540302 | Hagiwara et al. | Apr 2007 | S |
| D570824 | Schultz et al. | Jun 2008 | S |
| D589932 | Komiyama | Apr 2009 | S |
| D592182 | Sanguinetti | May 2009 | S |
| D597070 | Zheng | Jul 2009 | S |
| 7720246 | Wang et al. | May 2010 | B2 |
| D633895 | Morimoto | Mar 2011 | S |
| D643405 | Rath | Aug 2011 | S |
| D662080 | Carr et al. | Jun 2012 | S |
| D684140 | Enquist et al. | Jun 2013 | S |
| D684558 | Hansson et al. | Jun 2013 | S |