The broken line portions of the headphone shown in
The broken line portions of the headphone shown in
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|---|---|---|---|
| 1878397 | Hekler | Sep 1932 | A |
| 2314782 | Goretsky | Mar 1943 | A |
| 3562816 | Hutchinson | Feb 1971 | A |
| 3579640 | Beguin | May 1971 | A |
| D222361 | Hart | Oct 1971 | S |
| D235210 | Hill | May 1975 | S |
| 4499593 | Antle | Feb 1985 | A |
| 4597469 | Nagashima | Jul 1986 | A |
| 4689822 | Houng | Aug 1987 | A |
| D292205 | Kikutani | Oct 1987 | S |
| D300133 | Daidoh | Mar 1989 | S |
| 4821318 | Wu | Apr 1989 | A |
| D317767 | Banks | Jun 1991 | S |
| 5369857 | Sacherman | Dec 1994 | A |
| 6449806 | Engelhard | Sep 2002 | B1 |
| 7072483 | Lenhard-Backhaus | Jul 2006 | B2 |
| D534155 | Obata | Dec 2006 | S |
| D582890 | Koza | Dec 2008 | S |
| D603371 | Boateng | Nov 2009 | S |
| D617769 | Birger | Jun 2010 | S |
| D625705 | Ohori | Oct 2010 | S |
| D632668 | Brunner | Feb 2011 | S |
| D633471 | Sugiyama | Mar 2011 | S |
| D634298 | Shimizu | Mar 2011 | S |
| D641725 | Chong | Jul 2011 | S |
| 8006320 | Rohbani | Aug 2011 | B1 |
| D654472 | Fischer | Feb 2012 | S |
| D657346 | Park | Apr 2012 | S |
| D662080 | Carr | Jun 2012 | S |
| D664116 | Hutchieson | Jul 2012 | S |
| D664118 | Tappeiner | Jul 2012 | S |
| D666579 | Hou | Sep 2012 | S |
| D675595 | Cho | Feb 2013 | S |
| D678860 | Hagelin | Mar 2013 | S |
| D683329 | Hagelin | May 2013 | S |
| D685759 | Kelly | Jul 2013 | S |
| D688648 | Li | Aug 2013 | S |
| D697048 | Pavitsich | Jan 2014 | S |
| D699702 | Chen | Feb 2014 | S |
| D701193 | Kelly | Mar 2014 | S |
| 8755555 | Dougherty | Jun 2014 | B2 |
| D708163 | Ishikura | Jul 2014 | S |
| 8767996 | Lin | Jul 2014 | B1 |
| D721052 | Carr | Jan 2015 | S |
| D743369 | Mackiewicz | Nov 2015 | S |
| D763226 | Petersen | Aug 2016 | S |
| D787469 | Djohar | May 2017 | S |
| D787470 | Kelly | May 2017 | S |
| 20160198250 | Pan | Jul 2016 | A1 |