Patent application 14306573 (US), filed 2014-06-17
Publication number: US20150362085A1
Title: CHECK VALVE
CPC codes: F16K  15/026
Y10T 137/7935
F16K  15/063
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: 2554053
ref_type: patent
severity: obviousness
ref_id: 3537518
ref_type: patent
severity: obviousness
ref_id: 6997208
ref_type: patent
severity: obviousness
ref_id: 5323807
ref_type: patent
severity: obviousness
Final disposition: rejected (2015-10-16)