Patent application 13895012 (US), filed 2013-05-15
Publication number: US20130248198A1
Title: Safety System for Deep Water Drilling Units Using a Dual Blow Out Preventer System
CPC codes: E21B  17/012
E21B  33/064
E21B  41/06
Office action: rejection, dated 2015-10-15
Rejection reasons: anticipation_102
obviousness_103
indefiniteness_112
Prior art cited: ref_id: 5676209
ref_type: patent
severity: novelty_destroying
ref_id: 20130014688
ref_type: patent
severity: novelty_destroying
ref_id: 5676209
ref_type: patent
severity: novelty_destroying
ref_id: 3202216
ref_type: patent
severity: novelty_destroying
ref_id: 3211223
ref_type: patent
severity: novelty_destroying
Final disposition: pending (2015-10-15)