| 8818012 |
Adjustable, dual speaker element in-ear phone |
Michael J. Pelland, Ronaldo J. Santiago, James J. Potter, Mandy M. Johnson, Michael J. Koss |
2014-08-26 |
| 8340338 |
Adjustable shape earphone |
Iain Roberts, George Aye, Jerry O'Leary, Michael J. Koss, Martin Thaler +1 more |
2012-12-25 |
| 8103040 |
Adjustable, dual speaker element in-ear phone |
Michael J. Pelland, Ronaldo J. Santiago, James J. Potter, Mandy M. Johnson, Michael J. Koss |
2012-01-24 |
| 7428429 |
Hands-free personal communication device |
Christopher Gantz, Mandy M. Johnson |
2008-09-23 |
| D449592 |
Stereophone ear plug insert |
Michael J. Koss, Jennifer R. Schneider |
2001-10-23 |
| D444141 |
Stereophone ear plug housing |
Michael J. Koss, Jennifer R. Schneider |
2001-06-26 |
| D435036 |
Stereophone ear plug |
Michael J. Koss, Jennifer R. Schneider |
2000-12-12 |
| 5109424 |
Stereo headphones with plug, receptacle and securing plates |
Eugene M. Andre, Seth Banks |
1992-04-28 |
| 4899388 |
Infrared stereo speaker system |
Yih-Pyng Tsui, Hai-Pin Ku |
1990-02-06 |