Patent application 13877618 (US), filed 2013-10-17
Publication number: US20140029754A1
Title: METHOD FOR OPERATING A PUBLIC ADDRESS SYSTEM
CPC codes: H04R  29/007
H04R  27/00
Office action: rejection, dated 2015-10-15
Rejection reasons: obviousness_103
indefiniteness_112
Prior art cited: ref_id: 6466647
ref_type: patent
severity: obviousness
ref_id: EP 0967833
ref_type: patent
severity: obviousness
ref_id: 4404548
ref_type: patent
severity: obviousness
ref_id: WO 2008036992
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-15)