Patent application 13319441 (US), filed 2012-01-19
Publication number: US20120116231A1
Title: EARPLUG-TYPE EARPHONE
CPC codes: H04R   1/105
A61B   5/02433
A61B   5/02438
A61B   5/1455
A61B   5/14552
A61B   5/6803
A61B   5/7278
A61B   5/742
H04R   1/1016
H04R   1/1033
H04R   1/1058
H04R   1/1066
H04R   3/00
Office action: rejection, dated 2015-10-15
Rejection reasons: obviousness_103
Prior art cited: ref_id: 20100331631
ref_type: patent
severity: obviousness
ref_id: Xu CN 200944657-previously cited
ref_type: patent
severity: obviousness
ref_id: 6819762
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-15)