Patent application 13913222 (US), filed 2013-06-07
Publication number: US20140363024A1
Title: Group Volume Control
CPC codes: H03G   3/02
G06F   3/0482
G06F   3/0488
G06F   3/165
H04R  27/00
H04R2227/005
Office action: rejection, dated 2015-10-13
Rejection reasons: obviousness_103
Prior art cited: ref_id: 20070232362
ref_type: patent
severity: obviousness
ref_id: 20060251059
ref_type: patent
severity: obviousness
ref_id: 20120057725
ref_type: patent
severity: obviousness
ref_id: 20120051560
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-13)