Patent application 14802104 (US), filed 2015-07-17
Title: BIDIRECTIONAL STABILIZER
CPC codes: E21B  17/22
E21B  10/26
E21B  17/1078
Office action: rejection, dated 2015-10-13
Rejection reasons: obviousness_103
indefiniteness_112
Prior art cited: ref_id: 20140202770
ref_type: patent
severity: obviousness
ref_id: 20110253457
ref_type: patent
severity: obviousness
ref_id: 8162081
ref_type: patent
severity: obviousness
Final disposition: pending (2015-10-13)