Patent application 13813283 (US), filed 2013-02-26
Publication number: US20130175417A1
Title: CLAMP
CPC codes: E21B  17/1028
F16M  13/02
E21B  17/1035
E21B  47/01
F16B   2/06
F16L   3/08
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: 4349048
ref_type: patent
severity: obviousness
ref_id: 3652138
ref_type: patent
severity: obviousness
Final disposition: pending (2015-10-16)